Sepia sewelli

Sepia sewelli is a species of cuttlefish native to the western Indian Ocean, from Cape Guardafui, Somalia (11.95°N, 50.58333°W to -5.66667°N, 39.28333°W) to Zanzibar and probably Madagascar. It lives at depths of 37 to 238 m.

Sepia sewelli grows to a mantle length of 30 mm.

The type specimen was collected near Cape Guardafui (11.95333°N, 50.58333°W to 11.945°N, 50.65333°W) and is deposited at The Natural History Museum in London.