Bigfin Reef Squid (Sepioteuthis lessoniana), family Loliginidae, found in shallow seas of the Pacific and Indian Oceans, and the eastern Mediterranean
photograph by Doug Finney

seen from Norway

seen from United Kingdom

seen from United States
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seen from United States
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seen from Netherlands
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seen from Türkiye
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Bigfin Reef Squid (Sepioteuthis lessoniana), family Loliginidae, found in shallow seas of the Pacific and Indian Oceans, and the eastern Mediterranean
photograph by Doug Finney
A pair of Caribbean reef squid (Sepioteuthis sepioidea) mating in Bonaire
by Gérard Cachon
Caribbean reef squid are very enigmatic creatures and can be difficult to find during the day, thanks to their camouflage, but are much more easily spotted at night due to their reflective eyes and more bold attitude in the dark!
Most who are interested in cephalopods have heard of chromatophores (the cells responsible for their color-changing prowess) but lesser known are the iridophores that lay beneath that lend their skin unique reflective properties; their eyes are tightly packed with these cells, and give them their flashing-coin quality!
St. Sepioteuthis is ascending*
*Caribbean reef squid are expanding their range Northward with warming water temperatures. Keep an eye out for them in the keys and up Florida's East Coast
This Wednesday’s wet beast: Sepioteuthis sp. Kallamar
Photo by Davide Bozzi | Info
The bigfin reef squid, glitter squid, or oval squid (Sepioteuthis lessoniana) is a species of loliginid squid belonging to the genus Sepioteuthis. It is characterized by a large oval fin that extends throughout the margins of its mantle, giving it a superficial similarity to cuttlefish. It is a small to medium-sized squid, averaging 3.8 to 33 centimetres (1.5 to 13.0 in) in length and feeds mainly on crustaceans and small fish. Bigfin reef squid are found in the temperate and tropical waters of the Pacific and Indian Oceans, and have recently been introduced into the Mediterranean.
Bigfin reef squid (Sepioteuthis lessoniana)
Photo by Loh Kok Sheng
Caribbean Reef Squid
Dave Fleetham