Their pectoral fins spread like wings. The most brightly colored fish, like the emperor fish , live in warm tropical waters. A snail is a mollusk, and can hide completely inside its shell. There are marine and freshwater snails. A clam is also a mollusk.
Some clams bury themselves in sand or mud.
Ocean clams are very large. Octopus is another species of mollusk. Aside from their 8 arms octopus have large heads and keen eyes. Enjoy this selection of killer whale sounds, whale sounds, and dolphin sounds. Updated Every 15 Minutes.