Sepia carinata is a species of cuttlefish native to the western Pacific Ocean, specifically southern Japan, Sagami Bay, the South China Sea, and Vietnam. Depth range is lower sublittoral, to 128 m.[1]
Sepia carinata grows to a mantle length of 60 mm.
Reid et al. note that "this is likely to be a very rare species as it has not been recorded from Japanese waters since its original description".
The type specimen was collected in the Sagami Sea, Japan (35°04'50"N 139°38'18"E). It is deposited at the National Museum of Natural History in Washington, D.C.[2]