Algae Eaters:
* Many gastropods (snails and slugs): These mollusks graze on algae growing on rocks, seaweeds, and other surfaces.
* Some bivalves (clams, oysters, mussels): Filter feeders that extract algae from the water column.
Plankton Eaters:
* Some bivalves (clams, oysters, mussels): Also filter feeders, consuming plankton in addition to algae.
* Some gastropods (sea butterflies, pteropods): Tiny, free-swimming snails that feed on plankton.
Other Diets:
* Predatory Gastropods (cone snails, whelks, etc.): Some species hunt other mollusks, fish, and worms.
* Some bivalves (shipworms): Bore into wood and feed on the wood itself.
* Some cephalopods (squid, octopus): Carnivores that prey on fish, crustaceans, and other mollusks.
In Summary:
* Many mollusks are herbivores, consuming algae or plankton.
* Some mollusks are carnivores or omnivores.
* The diet of a mollusk is determined by its species, morphology, and habitat.
