Corals are very small marine animals that live in colonies and together they produce reefs. After the coral animal dies, the skeleton remains. Therefore it is known that these animals first appeared in the Carboniferous period and flourished by the Permian period, although they faced the same fate as most creatures: many kinds died out at the end of the Permian period. Corals display many shapes, sizes, and colors, and some large reefs can look like beautiful underwater gardens. Some corals resemble the tendrils of plants; others look like leaves, and still others look like colorful rocks. The growing patterns of corals are specific to the species of the coral. When most kinds of coral die, their colors fade, so not very much is known about the coloring of prehistoric coral, but it is assumed to be the same as the coral of today.

Some Coral is present here.