Claim: Sepia irvingi, which lives at a depth of between 130 and 170 m, grows to a mantle (the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself) length of 100 mm.
Evidence: It lives at a depth of between 130 and 170 m. Sepia irvingi grows to a mantle length of 100 mm. The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.