Cone snails are predatory marine snails. They can be found in warm seas and oceans around the world. A great many species can be found in the Indo-West Pacific region. They often live in tidal waters, under rocks in coral reefs, or in mangroves. They will often bury themselves under sand, leaving only their siphon sticking out.
The next few pages will describe the shell and body anatomy of cone snails, and will go into more detail about how cone snails have evolved a venom system that allows them to paralyse their prey.