Sepia irvingi is a species of cuttlefish

Cuttlefish

Cuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda . Despite their name, cuttlefish are not fish but molluscs....

 native to the southeastern Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

, specifically western Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, from Cockburn Sound

Cockburn Sound

Cockburn Sound is an inlet of the Indian Ocean on the coast of Western Australia. It extends from the south of the mouth of the Swan River at Fremantle for about 25 km to Cape Peron near Rockingham and is located at...

 to North West Shelf

North West Shelf

The North West Shelf of Western Australia is an extensive oil and gas region off the North West Australia coast in the Pilbara region.It has a considerable number of oil and gas wells, pipelines, production areas and support facilities.- Location :...

 (18°49′S 118°29′E). It lives at a depth of between 130 and 170 m.

S. irvingi grows to a mantle

Mantle (mollusc)

The mantle 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.In many, but by no means all, species of molluscs, the epidermis of the mantle secretes...

 length of 100 mm.

The type specimens were collected off Garden Island

Garden Island

Garden Island may refer to:Australia:* Garden Island, New South Wales* Garden Island, Tasmania* Garden Island , near PerthCanada:* Garden Island , Ontario* Garden Island , Ontario...

, Cockburn Sound

Cockburn Sound

Cockburn Sound is an inlet of the Indian Ocean on the coast of Western Australia. It extends from the south of the mouth of the Swan River at Fremantle for about 25 km to Cape Peron near Rockingham and is located at...

 (32°11′S 115°43′E), Port Royal

Port Royal

Port Royal was a city located at the end of the Palisadoes at the mouth of the Kingston Harbour, in southeastern Jamaica. Founded in 1518, it was the centre of shipping commerce in the Caribbean Sea during the latter half of the 17th century...

, King George Sound

King George Sound

King George Sound is the name of a sound on the south coast of Western Australia. Located at , it is the site of the city of Albany.The sound covers an area of and varies in depth from to ....

 (35°03′S 117°58′E), and Warnbro Sound (32°20′S 115°43′E) in South Africa

South Africa

The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

. They are deposited at the Western Australian Museum

Western Australian Museum

The Western Australian Museum is the state museum for Western Australia.The Western Australian Museum has seven main sites: two in Perth within the Perth Cultural Centre, two in Fremantle , and one each in Albany, Geraldton, and Kalgoorlie-Boulder...

 in Perth

Perth, Western Australia

Perth is the capital and largest city of the Australian state of Western Australia and the fourth most populous city in Australia. The Perth metropolitan area has an estimated population of almost 1,700,000....

.