While we think these are all one species of Elysia, it is possible there may be more than one represented by the photos below. Most range from light to darker green, usually with a faint line of yellow-orange along the parapodial margins and varying amounts of white pigment. They all share the same habitat of lagoon shallow Halimeda patches, where they tend to sit at the base of the algae clumps and cover themselves with a thin layer of sand. Several measured specimens have ranged from 13 to 18mm.
Some specimens have more white pigment.
On a blade of Udotea algae in a lagoon Halimeda patch.
Created 19 June 2007
Updated 14 January 2022