upepo
Elder Lister
The sea slug Elysia timida is capable of stealing chloroplasts from its algal prey. Once stolen, the chloroplasts, now termed kleptoplasts, remain functional inside the slug's cells for several weeks, essentially creating a photosynthetic slug.
Another sea slug called Elysia chlorotica shares the same capacity, but maintains its chloroplasts throughout its life. This one can go for an year without feeding, relying wholly on photosynthesis.
The slug Elysia chlorotica with the back spread out to absorb sunlight.
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