Conch is a sea snail, not a fish. Even though they're best known for being part of Caribbean seafood dishes, you won't necessarily find conch in the Caribbean! Know that conch mea can come in many different shades and textures: there is pink conch meat from water-loving sponges called calcareous algae; cream-colored from urchins with ione called ascidians; black from deep ocean waters or "black coral" which comes from fossilized corals.