Abstract
Octopus cyanea Gray, 1849 (Cephalopoda; Octpodidae) is widely distributed in shallow waters of subtropic and tropic regions of Indo-Pacific Ocean. In Japan, O. cyanea is recorded from Hachijo Island to Ogasawara Islands and from Shikoku to Ryukyus. No record about this octopus has ever been reported from Sagami Bay. We newly report three obvious records of this species from the bay depending on the specimen and the photographs. This is the northernmost records for this species in Japan.
