Some sea snails scrape smaller kinds of algae of rocks. Some sea snails are carnivorous and eat clams or other sea snails, often by drilling a hole in the shell and digesting and eating the body of the clam through the hole. Some sea snails eat sea worms. read more
Some sea snails are herbivorous and eat algae, (sea plants, of which there are many kinds). Some sea snails scrape smaller kinds of algae of rocks. Some sea snails are carnivorous and eat clams or other sea snails, often by drilling a hole in the shell and digesting and eating the body of the clam through the hole. read more