Coral Reef Atoll

In the middle of the sea in the Pacific Ocean

WHAT ATOLLS ARE

Atolls are rings of coral that form when islands/underwater volcanoes sink. They make a shape that the underwater volcano/island bottom was. The water temperature is 25-30 degrees celsius. They usually grow in the Pacific Ocean in the middle of the sea.

ANIMALS

PRODUCERS, CONSUMERS, DECOMPOSERS

There are different types of producers in the sea. There is soft coral (sea plumes), hard coral(brain coral), seaweed, zooplankton, phytoplankton, and more. Primary consumers are herbivores. (They are animals that eat plants) Secondary consumers are carnivores. (They eat meat) Some primary consumers are blue striped snappers, angelfish, jackfish, sea urchins, shrimp, sea fans, clown fish, coral, and sea sponges. Some secondary consumers are blue sharks, stingrays, jellyfish, starfish, sea turtles, sea horses, sea anemones, pufferfish, sea snakes, octopus, bottle nosed dolphins, moray eels, and sea slugs.

ATOLL FOOD WEB

In atolls the food web is pretty small. Phytoplankton is the bottom of the food chain. Mussels and zooplankton eat phytoplankton. Mussels and prawn eat zooplankton. Gulls and fish eat prawn. Lobster, gulls, crab and whelk eat mussels. Gulls and lobsters eat crab. Limpets eat seaweed. Lobsters, gulls and whelk eat limpets. Gulls and lobsters eat whelk.

ATOLL FOOD CHAIN

The atolls food chain is mostly animals. The food chain is the sun first, then phytoplankton, next zooplankton, mussels eat zooplankton, crab eat mussels, then lobsters eat crab.

ATOLLS PICTURES

ATOLLS IMAGES LINKS