Elysia timida
Encyclopedia
Elysia timida is a species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of sacoglossan sea slug
Sea slug
Sea slug is a common name used for several different groups of saltwater snails that either lack a shell or have only an internal shell, in other words this name is used for various lineages of marine gastropod mollusks that are either not conchiferous or appear not to be.The phrase "sea slug" is...

, a marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 opisthobranch gastropod mollusk. It feeds on the algae Acetabularia
Acetabularia
Acetabularia is a genus of green algae, specifically of the Polyphysaceae family, Typically found in subtropical waters, Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology...

 acetabulum (from which it keeps the chloroplasts, that are able to continue photosynthesis in the slug's tissues) and Padina
Padina
-In Bulgaria:* Padina, Kardzhali Province* Padina, Silistra Province* Padina, Varna Province-In Romania:* Padina, Buzău, a commune in Buzău County* Padina, a village in Amărăşti Commune, Vâlcea County-In Serbia:...

pavonia.

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