There are more than 50 thousand known species in this phylum, most of which are marine.
There are more than 50 thousand known species in this phylum, most of which are marine. They are soft-bodied animals, but most are protected by a hard shell of calcium carbonate. They consist of three main parts: a muscular foot for movement, a visceral mass where most internal organs are, and a mantle, which may secrete a shell over the visceral mass. FTP, name this phylum, members of which include slugs, snails, clams, octopuses, oysters, and squids.
There are more than 50 thousand known species in this phylum, most of which are marine.
{Mollusca} (Mollusks)