Sealife guideThe Hexanchidae familyThe taxonomy of marine species

Explore the taxonomy of the sea vertebrates including the cetaceans like the whales or the dolphins, the sea birds, the fish, the sharks and the sea turtles !

The order Hexanchiformes includes sharks easily recognized by their six or seven gill slits, their ancient lineage, and their deep-sea habitats.

Broadnose sevengill shark
(Notorynchus cepedianus)

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Saturday, September 12th 2026

The Caribbean king crab

Discover the Caribbean king crab (Maguimithrax spinosissimus), an impressive reef crab found throughout the Caribbean and western Atlantic.

Thursday, September 10th 2026

The reticulated sandperch

Discover the reticulated sandperch (Parapercis tetracantha), a small Indo-Pacific fish known for its elongated body and distinctive brown and white pattern.

Monday, September 7th 2026

The wedgetail triggerfish

Discover the wedgetail triggerfish, Hawaii's famous state fish. Learn about its vibrant colors, coral reef habitat, unique behavior, and cultural significance in Hawaii.

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Requin léopard
(Triakis semifasciata)