That's a mouthful of teeth!
They belong to a Frilled Shark that was caught off Fuerteventura.
Tiburón anguila means "Eel-Shark", and upon watching this video, I can totally relate!
Blog about "The World's best Shark Dive" by Beqa Adventure Divers. Featuring up to eight regular species of Sharks and over 400 different species of fish, Shark diving doesn't get any better!