One species of these found in the Caribbean is critically endangered and is commonly known as elkhorn. Those in family Scleractinia are called "stony" and have skeletal cups are made from calcium carb
One species of these found in the Caribbean is critically endangered and is commonly known as elkhorn. Those in family Scleractinia are called "stony" and have skeletal cups are made from calcium carbonate. Like some sea anemones, they exist in symbiosis with zooxanthellae (ZO-uh-zan-THEL-ee), which are algae. These are cnidarians, and individual ones are called polyps. Many of these organisms form an important habitat off the coast of Australia. For 10 points, name these small animals that build reefs.
One species of these found in the Caribbean is critically endangered and is commonly known as elkhorn.
corals