Elpidiidae
Elpidiidae is a family of deep-sea sea cucumbers.
They have a translucent body with long and stout podia acting like legs. The mouth is surrounded by thick and short oral tentacles, and the dorsal part often shows pairs of elongated podia as well, pointing upwards. Some species can also show swimming appendages on top of the mouth.Genera
The World Register of Marine Species recognises the following genera:
- Achlyonice Théel, 1879
- Amperima Pawson, 1965
- Ellipinion Hérouard, 1923
- Elpidia Théel, 1876
- Irpa Danielssen & Koren, 1878
- Kolga Danielssen & Koren, 1879
- Peniagone Théel, 1882
- Penilpidia Gebruk, 1988
- Protelpidia Gebruk, 1983
- Psychrelpidia Hérouard, 1923
- Psychroplanes Gebruk, 1988
- Rhipidothuria Hérouard, 1901
- Scotoplanes Théel, 1882
