n = 8
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Somniosus antarcticus | Whitley, 1939 | Somniosus antarcticus | Somniosidae | Southern sleeper shark |
| Somniosus bauchotae | Quéro, 1976 | Somniosus rostratus | Somniosidae | Little sleeper shark |
| Somniosus brevipinna | Lesueur, 1818 | Somniosus microcephalus | Somniosidae | Greenland shark |
| Somniosus cheni | Hsu, Lin & Joung, 2020 | Somniosus cheni | Somniosidae | Taiwan sleeper shark |
| Somniosus longus | (Tanaka, 1912) | Somniosus longus | Somniosidae | Frog shark |
| Somniosus microcephalus | (Bloch & Schneider, 1801) | Somniosus microcephalus | Somniosidae | Greenland shark |
| Somniosus pacificus | Bigelow & Schroeder, 1944 | Somniosus pacificus | Somniosidae | Pacific sleeper shark |
| Somniosus rostratus | (Risso, 1827) | Somniosus rostratus | Somniosidae | Little sleeper shark |