Richard Robinson / Shortfin mako shark (Isurus oxyrinchus) head on just below surface, another in background, off the West Coast of Auckland, New Zealand, February

Richard Robinson / Shortfin mako shark (Isurus oxyrinchus) profile portrait, just below surface, off the West Coast of Auckland, New Zealand, February

Chris & Monique Fallows / Mako shark (Isurus oxyrinchus) with sunrays, Cape Point, South Africa, March.

Chris & Monique Fallows / Mako shark (Isurus oxyrinchus) near surface, Cape Point, South Africa, March 2015

Doug Perrine / Salmon shark (Lamna ditropis) female with mating scars and copepod parasites trailing from fins, Port Fidalgo, Prince William Sound, Alaska, USA. Digital composite

Doug Perrine / Salmon shark (Lamna ditropis) female with mating scar on side and copepod parasites streaming from fins, Port Fidalgo, Prince William Sound, Alaska, USA

Doug Perrine / Salmon shark (Lamna ditropis) Port Fidalgo, Prince William Sound, Alaska, USA

Doug Perrine / Salmon shark {Lamna ditropis} captive, with salmon in mouth (eyes are rolled back for protection), Prince William Sound, Alaska, USA, (digitally modified)

Doug Perrine / Close up of teeth and mouth of Salmon shark {Lamna ditropis} captive, Prince William Sound, Alaska, USA (digitally edited)

Felis Images / Short fin mako shark (Isurus oxyrinchus) head discarded on ground, fins were dispatched for export and remaining meat cubed for sale locally. Negombo Fish Market, Sri Lanka. 2017. Photo Vydhehi Kadur/...

Inaki Relanzon / Shark fins (Squalus sp) for sale in fish market, Mako shark (Isurus oxyrinchus) head in bucket below. Bali, Indonesia, August 2014.

Inaki Relanzon / Mako shark (Isurus oxyrinchus) head and parts in bloody bucket, fish market, Bali, Indonesia, August 2014. Vulnerable species.