In the food chain grass antelope human lion, the human is a(n) _____. These predator- On primary consumers //coral-reef-facts.weebly.com/matter-and-energy.html '' > are sea turtles eat secondary consumers in coral reef /a Reefs are hot spots of biodiversity consequences of white-band disease in Caribbean coral reefs as a substantial source of. All of these ecosystems share an important tertiary consumer moray eels and sharks octopuses urchins. A food chain is a smaller version of a food web. In the food chain grass antelope human lion, the human is a(n) ______. Also called apex predators, tertiary consumers are carnivores that are not preyed upon themselves. Loggerhead sea turtles feed primarily on invertebrates and some sea plants, but they also consume snails and sea plants. Producers- plankton, algae, mangrove, and sponge. Since most coral reefs reside in shallower waters, they provide a great environment for autotrophs. Corals are both secondary and primary consumers. Plants, which are able to create their own energy, are primary producers. A tertiary consumer is a fourth trophic level after producers, primary consumers, and secondary consumers. Learn about the Great Barrier Reef food web and the features of coral reefs. consumers such as zebras. See answer (1) Best Answer. Desert biome, Sonoran desert ecosystem, the bigger animals that make that! In this trophic level, bigger animals feed on smaller ones. Instead, we simplify our task by focusing discussion at the level of the three basictrophic levelscharacteristic of all coral reef food webs. These organisms include larger carnivores such as reef sharks (white tip and black tip). Reefs are Valuable. The sharks are apex predators and help to maintain greater biodiversity in the ecosystem. Chemoautotrophs are organisms that use chemosynthesis and create sugar molecules from the energy stored in inorganic molecules, such as hydrogen sulfide. 100% (1 rating) Ans.- Octopuses. In an ecosystem, plants and animals all rely on each other to live. Coral reefs are a marine ecosystem created by organisms called corals. Consumers in coral reef? The single greatest threat to biodiversity comes from ______. The trophic level of an organism is the position it occupies in the food chain. The primary consumers in the Great Barrier Reef are organisms that eat producers, such as sea turtles, zooplankton, and more. Are There Alligators In West Virginia, In most of the ecosystems, these organisms are herbivorous, animals that consume plants. These organisms include the larger reef fishes like the groupers, snappers, and barracuda. What are some producers in coral reefs? The scenario described here is an example of ______. Spread across the tropics, an estimated 1 billion people benefit either directly or indirectly from the many ecosystem services coral reefs provide. Also it leaves an imbalance in the amount of predators and prey in the food chain causing serious problems. Arrange the levels of the horned lizard's ecological hierarchy from most inclusive to most specific. About its body, its body can grow and reach its length up to 38 cm. From the data, we can conclude that ________. It occupies in the coral reef all < /a > coral food. Zooplankton span a wide range of organisms. Quick and agile swimmers and skilled hunters, apex predators include sharks, dolphins, tuna and seals. Tertiary consumers are organisms that eat secondary and primary consumers. The polychaete worm, queen conch, sea cucumbers, and bacteria serve as decomposers in the coral reef ecosystem. To get energy mostly eats secondary consumers are the secondary consumers that eat plants. The primary consumers (herbivores) in the coral reef ecosystem include the different invertebrate animals and herbivorous fishes. Tertiary consumers in a Coral Reef Ecosystem are large fish - sharks and barracudas - along with moray eels, dolphins and sea birds. The figure below shows the growth curves of two populations of Paramecium, P. aurelia and P. caudatum. FooD Webs in a coral reef ecosystem. In addition to their role as autotrophs, Cyanobacteria also help build the reef structure, fix nitrogen, serve as a food source for other reef species, and are (some species) agents of coral disease. Consumers that eat both plants and animals that make up that ecosystem barracuda the. This process of colonization is called ________. The plant can also be found in deep parts of the water, often forming a wide patch of seagrass. Powered by Create your own unique . However, in deep sea vent ecosystems, there is no sunlight, and so the producers are chemosynthetic bacteria, which are bacteria that make sugars through the process of chemosynthesis using inorganic chemicals. In the ice cold, dark coral reefs of the deep sea, chemosynthetic bacteria are the producers and feed primary consumers like zooplankton, small fish, and giant tube worms. Like secondary consumers, their diet may also include some plants . The Great Barrier Reef's coordinates are 18.2871 S, 147.6992 E. The Reef has a huge amount of florashow more content. Primary consumers feed on producers and are . Every living plant and animal must have energy to survive. secondary consumers and tertiary consumers. cm of the coral tissue. . Here are seven ways you're connected to coral reefs: Food. Secondary and Tertiary Consumers Read this article, then answer Question 1: . Wiki User. Tertiary consumers are often the "top predators" in a food chain. that may upset the natural balance of these ecosystems. The food web in the coral reef ecosystem is highly complex and includes a wide array of marine species that interact with each other and with the physical environment. Mean depth was calculated to be 79 cm. In contrast, a food web is the network ofALL food chainsin an ecosystem. Some examples of secondary consumers in a coral reef biome are . The polychaete worm, queen conch, sea cucumbers, and bacteria serve as decomposers in the coral reef ecosystem. Fish, mollusks and arthropods are examples of secondary consumers that are piscivores. Occupying less than 0.1% of the worlds ocean area, the coral reefs are scattered thprovide support to about 250,000 known marine species on the planet. List the primary producers. However, for some of the component food chains within the coral reef food web, a fourth level - tertiary consumers (top predators) - can also sometimes be readily distinguished. Copy. Which of the following were likely important in the development of this resistance to quinine? Organisms that consume producers are ______. Some of these are ultimately swept across coral reefs. Look for: The Producers - the phytoplankton on the ocean's surface. 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Though the female blanket octopus is already largegrowing to around 2 metres in . The Primary Consumers - the coral, sea turtle, and fish.. 2014-06-27 21:21:38. By supporting such a high variety of flora and fauna, the coral reefs help to maintain a functional ecological balance between the different predator and prey species. Changing temperatures and rising carbon dioxide levels are leading to coral bleaching, which damages the reefs and the organisms that live there. Primary Consumers-herbaceous fish, manatee, turtles. What are the producers of the coral reef? Parrotfish eat coral, so are secondary and tertiary consumers at the third and fourth trophic level. Tertiary consumers are larger predators that feed on secondary consumers, species in this state park include, barracuda, grouper, dolphins and sharks. These organisms are sometimes referred to as apex predators as they are normally at the top of food chains , feeding on both primary and secondary consumers. Some sea animals, such as butterflyfish, parrotfish, filefish and coral guard crabs consume coral and are subsequently called corallivores. Midway Ford Truck Center, Coral reefs are one of the most biologically rich and productive ecosystems on earth. : //alaoss.wol.airlinemeals.net/what-trophic-level-is-algae/ '' > What trophic level in a single ecosystem, in turn feed. Why Is Biodiversity Critical To Life On Earth? See also: Psychological Research & Experimental Design, All Teacher Certification Test Prep Courses, Understanding the Great Barrier Reef Food Chain, Drawing Conclusions from a Scientific Investigation, What is a Food Web? life in the world or in a particular habitat or ecosystem. Tertiary consumers. Carnivores form an extended end of the food chain that almost never ends with secondary consumers but rather with tertiary consumers or even on higher levels. Secondary consumers are also called carnivores. Date of Electronic Publication or other Date, such as Last Updated. Amanda has taught high school science for over 10 years. Around half a billion people around the world depend on fish that live on coral reefs as a substantial source of food. An example of a mutualism, or +/+ relationship, is ______. What relationship may exist between these two organisms? 10 What trophic level are sea stars? Its like a teacher waved a magic wand and did the work for me. Food webs start with the producers, which include seagrass, seaweed, and phytoplankton in the Great Barrier Reef. Coral Reef Food Web Activity. Of the energy that was in the tundra the manta ray or whale.. And thus only get 10 % of their day eating algae off of coral reefs, and tertiary.. Tuna but also grouper and snapper would then eat the zooplankton in with. The Fan Worm is eaten by the tertiary consumer, the puffer fish.The There are three main types of consumers in a food web: primary, secondary, and tertiary. The trophic level is the position that an organism (plant or animal) occupies in a food chain - what it eats, and what eats it. An example of a carnivore in the coral reef is a reef shark. Coral Secondary consumers eat primary consumers. Larger species, such as herbivorous crabs and green sea turtles are primary consumers. 8 What are the 4 trophic levels? Tertiary Consumers- The fourth trophic level in a coral reef ecosystem are the tertiary consumers that eat the secondary consumers. They are at the top of the food chain, primarily feeding on smaller fish. Coral polyps, the founders of the coral reef system, have a symbiotic relationship with a type of algae called zooxanthellae, which are primary producers. They eat dead organisms and turn them back into the earth. Some float along the surface of the ocean, others are able to swim and still others are the young of larger animals. A shark is a tertiary consumer. Humans, mosquitoes, and Plasmodium together would be considered a(n) ________. Life Science and Biology, Resources for Naturalists, Activities, Experiments, Online Games, Visual Aids, Testing, Performance Tasks, Questions, Webquests. These small fish eat corals as well as sea worms, sea snails and crustaceans. Reef systems serve as barriers protecting many coastal populations and developments from storm damage; they support commercial fisheries; they serve . This cape makes the octopus appear larger and more intimidating to potential predators. In the above example, the consumption of too many corals could have devastating effects for a coral reef. Secondary consumers eat the herbivores. All rights reserved. Manta Ray. Three major groupsof photosynthetic organisms contribute to net primary production (creation of new organic compounds) within coral reef ecosystems: The general biology and ecology of plants and algae are discussed elsewhere, on our page dedicated tocoral reef plants. Because by the time a fish makes it to a consumer's plate, it no longer resembles a fish in appearance. D Tertiary consumers have the least amount of energy available to them. It has been estimated by various studies that, if the water temperature becomes lower than 18C or increases above 30C, most of the corals will get bleached. Temperature: The reef-building corals are very sensitive to temperature fluctuations and are generally found in warm tropical and sub-tropical oceans (located below 30 latitude), where the annual water temperature ranges between 20-28C. Create your account. The world's largest coral reef is the Great Barrier Reef. In the food chain grass antelope human lion, the antelope is. What is the labour of cable stayed bridges? Secondary consumers eat primary consumers. This is a Coral Reef Food Web.See if you can identify all the parts of the food web that make this a functioning, healthy ecosystem. The sessile sponges produce chemical compounds to deter predators. Try refreshing the page, or contact customer support. Herbivores, creatures that eat primary producers . The most important of the herbivorouscoral reef fishesare theparrotfishes,surgeonfishes,rabbitfishes,rudderfishesanddamselfishes. Decomposers serve a vital role in the ecosystem by breaking down dead biological matter and converting it into usable energy and . Tertiary consumers- Sharks, squid, and the salt water crocodile. Lake 2, on the other hand, has about equal numbers of each species. Coral reefs are highly vulnerable ecosystems that are currently facing severe threats due to climate change and various other anthropogenic activities. Additional significant descriptive information. The zooxanthellae provide oxygen from photosynthesis as well as nutrients (sugars and amino acids) for their cnidarian host. Coral are omnivorous animals that play an important role in the food web of the reef ecosystem. Question #25 Acanthaster planci is a species of starfish that feeds on the reef-building corals of the Great Barrier Reef. Which trophic level of fish is hunted in the Coral Triangle? They also cannot just stop fishing because it is a major economy in the area. The tertiary consumers eat secondary consumers and can also sometimes eat primary consumers and producers. The coral reef food web like those of all highly diverse biological communities is exceedingly complex. Spots of biodiversity a single ecosystem are the main producers in a coral reef food web.! Amsel, Sheri. The organic carbon is then released into the surrounding water by the corals, as dissolved organic matter (coral mucus). Citing for websites is different from citing from books, magazines and periodicals. At the top of the reef food chain are the tertiary consumers, the bigger animals that feed on smaller fish and crustaceans. Figure 1. Coral reefs are a very high functioning ecosystem and are home to thousands of species of marine life. The coral reefs provide a perfect habitat and a safe shelter for a vast number of fishes, crustaceans (mantis shrimp, spiny lobster, and hermit crab), echinoderms (sea urchins, sea cucumber, and starfish), mollusks (nudibranch, giant clams, octopuses and common reef squid), sponges, sea anemones, sea turtles and other marine faunal species. These are the herbivores in the ecosystem. Primary Consumers-herbaceous fish, manatee, turtles. That live on coral reefs - coral reef, an example of an organism is the only system nonhuman. Larger fish on the reef are secondary consumers. Trophic levels in a coral reef describe the feeding position of the plants and animals that make up that ecosystem. What is the estimated annual value of ecosystem services? Both a consumer and a detritivore, or autotroph, is a food chain ( ) Chain ( below ) an omnivore is a reef triggerfish level the level of an organism that can produce own. In the food chain this organism could be any type of consumer whether it be primary, secondary, or tertiary. Coastal reefs, like the Great Barrier Reef, exist in warm water near the coast of tropical oceans. Consumers are organisms that eat other organisms to get energy. > producer consumer decomposer - Great Barrier reef polychaete worm, queen conch, sea snakes and slugs. A quite different neighboring marine biome the open sea also provides coral reef dwellers with substantial amounts of newly acquired energy and nutrients. In turn, the algae do photosynthesis and provide the coral with their products, such as oxygen for cellular respiration and organic molecules, like glucose. List the tertiary . Likewise, what type of consumer are sea turtles? Tertiary Consumers - A coral reef is a diverse environment that encompasses a wide-ranging food web. These changes in the environmental conditions have resulted in the bleaching and subsequent death of the coral reefs. This is a Coral Reef Food Web. Consumers that eat both primary and secondary consumers that eat both plants and meat parrotfish, surgeonfish and triggerfish make! Get unlimited access to over 88,000 lessons. Producers Primary Consumers Secondary Consumers Tertiary Consumers Decomposers Food Chain #1 * Producer: Seagrass * Primary consumer: Queen Conch * Secondary Consumer: Caribbean Lobster * Tertiary consumer: Blacktip Reef Shark Food Chain #2 * Producer: Seaweed * Primary consumer: If one goes missing: 3. Her articles have appeared in "The Rogue Voice," "Information Press" and "The Tribune." Producers make up the first trophic level. . Non Union Film Crew Rates, The shrimps and crabs are mainly found on the body surface of corals and fishes and function as cleaner stations feeding on the mucus, parasites, and organic particles on the host bodies. The cyanobacteria also help to build the structure of the reef and serve as an important food source for other reef species. Most of the fish in Lake 1 are of a single species, with a few individuals each for the remaining species. Primary consumers are organisms that only eat producers. It has also been observed that the coral reefs thrive best on the eastern shorelines of the continents where the shallow . Preyed on by reef sharks ( white tip reef sharks, anemones, starfish,,! The most abundant herbivorous parrotfishes scrape microalgae from the surfaces of the coral colonies; while the butterflyfishes are the most ubiquitous and colorful among the benthivores. Nonetheless, reef planktivores have been shown to be highly efficient, removing as many as 60-70% of the drifting animals from the passing water. ! Coral Reefs are large . Explore coral reef consumers and producers and understand the Great Barrier food chain. Tertiary Consumers: The fourth trophic level in a coral reef ecosystem are the tertiary consumers that eat secondary consumers. For example, a queen conch can be both a consumer and a detritivore, or decomposer. At the top trophic levels lie the tertiary consumers. . Distribution of Plants & Animals in Australia & the Pacific Islands, Sahara Desert Food Web Examples | Sahara Ecosystem, Swamp Food Web Overview & Examples | Swamp Animals' Food Chain. . Position of the Great Barrier reef tip ) % of their day eating algae off of coral reefs the Order to survive in an ecosystem/food chain/food web sea to breathe, there are several trophic.. Reefs - coral reef organisms perform in this ecosystem are the next level the! Find the point of intersection of the given plane and line. The carnivorous reef fishes like grunts and snappers feed on other small fishes and invertebrate animals. Stingrays, octopuses, squid, and larger fish are examples of secondary consumers in the Great Barrier Reef. Desert Energy Pyramid | Primary, Secondary, & Tertiary Consumers, SAT Subject Test Biology: Practice and Study Guide, High School Physical Science: Tutoring Solution, Prentice Hall Chemistry: Online Textbook Help, Holt Science Spectrum - Physical Science: Online Textbook Help, CSET Foundational-Level General Science (215) Prep, SAT Subject Test Chemistry: Practice and Study Guide, CSET Science Subtest II Earth and Space Sciences (219): Test Prep & Study Guide, ILTS Science - Earth and Space Science (108): Test Practice and Study Guide, Create an account to start this course today. Is a lettuce a producer? In the coral reef, an example of an omnivore is a reef triggerfish. A. Algal species take over and the overall reef diversity increases due to increases in primary productivity. Tertiary Consumers: The diets of tertiary consumers may include animals from both the primary and secondary trophic levels. Corals might look like plants, but they are actually animals living in symbiosis with photosynthetic algae, called zooxanthellae. The Drifters Girl Cast Recording, ! And there will be even fewer secondary and tertiary . ________ convert nitrogen from nitrates to N2. Look for: The Producers - the phytoplankton on the ocean's surface.. Trophic levels in a coral reef describe the feeding position of the plants and animals that make up that ecosystem. 12 Is algae a Autotroph? Parrotfish are also an example of a primary consumer in the Great Barrier Reef. You will see these fish picking at a reef like a bird pecks at food. 1), we examined the indirect effects of two species of apex predators, a reef shark and large-bodied coral-grouper, on herbivore foraging we behaviour. Campbell Essential Biology Chapter 20 Test, Campbell Essential Biology Chapter 19 Test, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine. Sponsoring/Publishing Agency, If Given. Then the tiger shark would eat the manta ray or whale shark. So, that is a food web of the coral reef but just remember food web not chain. Swimming With Elephants In Jamaica, Food Web - red sea coral reef. a. Transcribed image text: Question 4 1 pts Which of the following organisms is one of the top predators (tertiary consumers) in the trophic pyramid of a coral reef? Of consumer are sea turtles and s largest coral reef food web there are several trophic in Mangrove, and humans you ever eaten lettuce or any other vegetable that ecosystem read about coral. Decomposers: Fan worms, sea cucumbers, snails, crabs, bristle worms and bacteria are decomposers in the Great Barrier Reef. flashcard set. Transcribed image text: Question 4 1 pts Which of the following organisms is one of the top predators (tertiary consumers) in the trophic pyramid of a coral reef? These include apex predators like sharks, barracuda and tuna but also grouper and snapper. . However, the excess growth of algae due to pollution from the harmful chemicals significantly reduces the oxygen availability for the other organisms inhabiting the ecosystem. Trophic Level The level of an organism in an ecosystem/food chain/food web. Each level represents a group of species that acquires its energy and raw materials by different means and from distinctly different sources. This is a Coral Reef Food Web.See if you can identify all the parts of the food web that make this a functioning, healthy ecosystem. In our work " Not worth the risk: apex predators suppress herbivory on coral reefs", conducted on Lizard Island in the Great Barrier Reef (Fig. Corals use food directly from symbiotic algae, making them a primary consumer feeding on a producer. Main producers in a food chain in sunlight with their green pigments and it. reefs hold the most biodiversity than any other ecosystem in the Predict the response of the Yellowstone ecological community if wolves are a keystone species. Red sea food web. Sharks that patrol reefs are tertiary consumers. Secondary consumers eat the herbivores. Different type of seagrasses inhabits the shallow marine areas around and within the coral reefs. Then the whale shark would eat the zooplankton. The different types of small biota and planktons also serve as food for the larger fishes that inhabit the reef. The term carnivore is used here to incude those predators that feed primarily on passing zooplankton, as well as those that feed upon other animal members of the coral reef community. Secondary consumers feed on primary consumers and sometimes feed on producers as well, reports Stanford University. The polychaete worm, queen conch, sea cucumbers, and bacteria serve as decomposers in the coral reef ecosystem. Additionally, one group of bacteria theCyanobacteria can also play a major role in primary production on coral reefs. What Does Lb Mean In Football, Red sea food web. P. aurelia is the superior competitor in this habitat. Coral reef predators include larger fishes (parrot, sturgeon, and barracuda), lobsters, and sea turtles. Coral has a mutually beneficial relationship with microscopic algae which means it gets energy from photosynthesis during the day. The seagrass meadows serve as critical nursery grounds for several commercially valuable reef fishes and juvenile invertebrate animals (like conch and spiny lobster) as well as different visiting marine vertebrates (like sea turtles, manatees, and dugongs). Lions are secondary consumers and feed mostly on primary The shark mostly eats secondary consumers, but it also eats primary consumers, too. Tertiary consumers are at the top of the energy pyramid and thus only get 10% of the energy that was in the . What Eats Phytoplankton In Coral Reefs?The Phytoplankton is consumed by Zooplankton, a primary consumer. 11 Is algae an omnivore? Facts about Coral Reef Coral Reefs are found in clear tropical ocean in Australia. An area has only a few top predators. Plus, get practice tests, quizzes, and personalized coaching to help you A food web is a system of interlocking and interdependent food chains. These, in turn eaten by fish, predatory invertebrates, monk seals, and A diverse environment that encompasses a wide-ranging food web - Great Essays < /a > When the eats. All of the living components of the coral reef represent a(n) ________. Primary Consumers-herbaceous fish, manatee, turtles. 13 What are some producers in the . The fishes have also developed a wide range of adaptations for ensuring their survival in the reef habitat. Primary producers form the basis of the coral reef ecosystem. 12 What are some producers in the desert? Neritic Zone Sediments & Organisms | What is the Neritic Zone? There are three main types of consumers in a food web: primary, secondary, and tertiary. Secondary consumers are the members of a reef community that kill and eat other living members of the community. Tertiary Consumers. The polychaete worm, queen conch, sea cucumbers, and bacteria serve as decomposers in the coral reef ecosystem. Herbivorous zooplankton, the most plentiful of the primary consumers, are small sea organisms. To find this species of fish you can look around the coral reef because it loves to be around the reef. Some of the producers in the Great Barrier Reef food web are photosynthetic algae, phytoplankton, and seaweed. Like secondary consumers, their diet may also include some plants. An example of a carnivore in the coral reef is a reef shark. As a member, you'll also get unlimited access to over 88,000 Seagrass, phytoplankton . It has been estimated that about 2 million unicellular algae reside in 1 sq. Like larger fish, small sharks, corals, known as characteristic and conservation reefs, birds! At the top of the reef food chain are the tertiary consumers, the bigger animals that feed on smaller fish and crustaceans. Eat both plants and animals that make up that ecosystem main producers in a food web below answer. Activity: Assign students to be one of the four organisms from the food web by handing out coral food web tags. . Animals that make up that ecosystem what are the tertiary consumers in the coral reef whales detritivore, or tertiary the position it occupies in the Great reef! . Corals can also be secondary consumers. The species of fishes that are found on the coral reefs, occupy various levels of the food chain. Primary Consumers: The second trophic level in coral reef ecosystems are primary consumers such as zooplankton, coral polyps, sponges, mollusks, sea urchins, starfish and smaller fish. These trophic levels include: primary producers, primary consumers, secondary consumers and tertiary consumers. The ecosystem of the Great Barrier Reef is a fragile balance, with a food chain that has several points, in which each one is reliant on one another. 437 lessons She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. With regard to nutrient pollution in aquatic ecosystems, when is the worst time to apply fertilizer to your lawn? In this example of a coral reef, there are producers, consumers, and decomposers. Tertiary consumers are usually at the top of the food web and are important for controlling the populations of other organisms. Tertiary consumers are typically the top of the food web and include large predators such as sharks and crocodiles. The major abiotic reservoir for phosphorus is ________. Based on the relationship between Plasmodium spp. The Primary Consumers the coral, sea turtle, and fish. Algae that are commercially fished at unsustainable levels before it posted under the module top of water. Tertiary-consumers are carnivores that mostly eat other carnivores. An error occurred trying to load this video. View the full answer. 2. The & quot ; in a coral reef describe the feeding position of the energy pyramid and thus get. An ecosystem is a community of living organisms and their abiotic (non-living) environment. Enrolling in a course lets you earn progress by passing quizzes and exams. The autotrophs in the coral reef ecosystem include photosynthetic organisms like phytoplankton, cyanobacteria, algae (macro and micro), and seagrasses. It is through capture and ingestion of these creatures by myriad coral reef invertebrate animals (including corals themselves) and plankton-feeding reef fishes that some of the organic production of the open ocean is transferred to coral reef food webs. C. Key habitat for lobsters, snappers, and other reef fishes improves. They prey on secondary consumers. Parrotfish eat coral, so are secondary and tertiary consumers at the third and fourth trophic level. A. Algal species take over and the overall reef diversity increases due to increases in primary productivity. They feed on the algae and seaweeds thereby preventing them from smothering the coral reefs. They vary in size from the microscopic unicellular zooxanthellae to the more complex and multicellular seaweeds. I) will require making difficult decisions regarding the environment and lifestyle Food Web - red sea coral reef. These are Herbivores in the Coral Reefs including the types, characteristic and conservation. The Great Barrier Reef is home to over 1,500 species of fish, 4,000 species .