In the comics, the Parasite can absorb the super powers of any hero he touches. Tap the Flash on the shoulder and he gets super speed. Shake Superman’s hand, and he’s able to leap tall buildings in a single bound. Nudibanch sea slugs appear to have a surprising similar ability. Researchers have identified a species of sea slug,Elysia chlorotica , that steals chloroplast from algae and then starts photosynthesizing. The nudibranch takes a single meal of algae early in life, extracts the chloroplasts from its prey and inserts them into its cells.
This ability to harvest the cellular apparatus of another species seems to be something nudibranchs do very well. Several species of nudibranchs have been identified that can extract the stinging organelles (or cnidocytes) of jellyfish and coral and insert them into their own tissues for protection (although, how they extract the sensitive cnidocytes without triggering them is a still a mystery). But, just like the Parasite, this ability doesn’t last forever. Once the nudibranch has fired its purloined cnidocytes, it must replenish them by eating more jellyfish or coral.
via Drawing Flies