Comprehensive DescriptionRead full entry
This species varies from light to dark green to brown in color. Often there is a white patch behind the rhinophores and a white line from the patch running up the basal half of each rhinophores. The rhinophores have a white upper region and mottled green or brown lower half. The rhinophores are rolled and have prominent protrusions/papillae. These papillae are found on the body of the animal and are usually white in color.
Elysia tuca is one of the solar powered sacoglossans which keep the chloroplasts from their algal food alive and photosynthesizing to produce sugars and other nutrients for their own use.
This species lays egg masses with a thick, bright orange ribbon of extra-capsular yolk. This ribbon of yolk touches each developing embryo. There is virtually no intracapsular metamorphosis and swimming veligers hatch between 2 and 16 days, depending on where they are in the egg mas (Krug, 2009).