Although Elysia species have the same general body plan, looking like a green, ruffly pancake with rhinophores sticking out the front end, each species differs from the others on the basis of physical characteristics, lifestyle, and/or geographic range.  Features specific to particular species, and the scientific literature related to them, will be described in the pages below.

Notes:
1.  The genus is undergoing constant revision, so that any species listed below may be split or rendered invalid at any time.
2.  I have set an arbitrary threshold of four scientific papers for a species to have its own page.

• Elysia asbecki
• Elysia atroviridis
• Elysia australis
• Elysia bengalensis 
• Elysia bangtawaensis 
• Elysia catulus 
• Elysia chlorotica
• Elysia clarki
• Elysia cornigera
• Elysia crispata
• Elysia diomedea
• Elysia filicauda
• Elysia furvacauda 
• Elysia grandifolia
• Elysia halimedae 
• Elysia hedgpethi 
• Elysia leukolegnote 
• Elysia maoria 
• Elysia macnaei
• Elysia nigrocapitata
• Elysia ornata
• Elysia papillosa
• Elysia patagonica
• Elysia patina 
• Elysia pratensis
• Elysia pusilla
• Elysia rufescens
• Elysia setoensis
• Elysia singaporensis
• Elysia stylifera
• Elysia subornata*
• Elysia timida
• Elysia tomentosa
• Elysia tuca
• Elysia trisinuata
• Elysia viridis
• Elysia zuleicae