Search the internet for that organism called “green sea slugs” Elysia chlorotica and related species (Phylum Mollusca) and read about their mode of nutrition. Are they autotrophs or heterotrophs? Or...

Search the internet for that organism called “green sea slugs”Elysia chloroticaand related species (Phylum Mollusca) and read
about their mode of nutrition. Are they autotrophs or heterotrophs? Or do you have a better classification?
Defend your answer. please explain