Only this is real. A new study led by Harvard biologists describes how some sea slugs consume algae and incorporate their photosynthetic organelles into their own bodies.

New sea slug species with oral tentacles and translucent yellow body discovered in the Yellow Sea near Qingdao, China, the first in its genus in 93 years.

New sea slug species with oral tentacles and translucent yellow body discovered in the Yellow Sea near Qingdao, China, the first in its genus in 93 years.

Sea slugs in the genus Elysia are bright green because they store chloroplasts, the organelles that make energy in plants. Credit: Corey Allard ‘ Solar-powered’ sea slugs have specialized ...

At first glance, the lettuce sea slug (Elysia crispata) looks like a leafy underwater alien. But what’s hiding inside its frilly green body is far more fascinating than its salad-like appearance.