Coral reef

A coral reef is built by tiny animals. Many fish hide in it.

16 animals live here.

Green sea turtleReptileMany swim back to the beach where they hatched.Whale sharkFishThe whale shark is the biggest fish. It is not a whale.Hammerhead sharkFishIts eyes sit at the ends of its wide head. The shape helps it sense hidden animals.ClownfishFishAll clownfish start as males. One can become female later.SeahorseFishThe father seahorse carries the babies in a pouch.PufferfishFishA pufferfish can swell with water and look like a spiky ball.Manta rayFishA manta ray is a flat fish. It eats tiny animals.StingrayFishA stingray is related to sharks. Its skeleton is cartilage, not bone.Green morayFishIt looks green because yellow slime covers blue skin.Great barracudaFishA barracuda is long and fast, with a pointed face.LionfishFishLionfish have long spines. In the Atlantic they spread after people moved them.Common octopusOther animalAn octopus has three hearts. It can squeeze through a small gap.CuttlefishOther animalA cuttlefish can change its color and the texture of its skin in a moment.Hermit crabOther animalA hermit crab borrows an empty shell and moves to a bigger one as it grows.Sea starOther animalA sea star is not a fish. It can regrow a lost arm.Reef coralOther animalCoral looks like rock or a plant, but it is made of tiny animals.