Australia has one of teh most famous oral reefs in teh world, teh Greta Barrier reef, you can see it form space its so big!
Biotic Factors:
Box Jellyfish
Blue Ringed Octopus
Sea turtles
Dolphins
Sharks
Abiotic Factors;
Sand, pebbles, water surrounding the reef, the calcium carbonate "skeleton" of the coral, rocks, and sunlight
Consumers:
Whale Sharks, Dolphins, krill, whales, fish, humans
Producers:
Kelp, seaweed, sea grass, zooplankton
Predators:
White tip reef shark, black tip reef shark, albatrosses, seagulls, grouper, barracudas, great whites, tiger sharks
Prey:
Zebra Fish, parrot fish, sardines, snapper, starfish, mollusks