Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) swimming in shallow crystal clear water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) fins at frenzied surface, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) group swimming in shallow turquoise sea, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus), Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) approaching Grey heron (Ardea cinerea) in shallow water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reefs sharks (Carcharhinus melanopterus) dorsal fins visible at sea surface at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) in shallow water gathering very close to shore, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) swimming in shallow crystal clear water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) split level view of group hunting at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) swimming in shallows at sunset, Aldabra Atoll, Seychelles, Indian Ocean

Richard Robinson / Thicklipped jack (Pseudocaranx dentex ) swimming in front of nose of Grey Reef Shark (Carcharhinus amblyrhynchos) at North Minerva Reef / Teleki Tokelau a disputed territory in the South Pacific bet...

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos), opens it's mouth during a shark feed off the island of Yap, Micronesia.

Franco Banfi / Grey reef shark (Carcharhinus amblyrhynchos) North Point dive site, Sanganeb reef, Sudan, Red Sea

Doug Perrine / Grey reef shark (Carcharhinus amblyrhynchos) upper and lower teeth, on display at Oceanographic Museum of Monaco, Principality of Monaco (digitally modified)

Jordi Chias / Grey reef sharks (Carcharhinus amblyrhynchos) in the south pass of Fakarava Tuamotus, French Polynesia, South Pacific

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) viewed from below, Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef shark (Carcharhinus perezi) viewed from below, Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) swimming over the reef, Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Caribbean reef sharks (Carcharhinus perezi) Northern Bahamas, Caribbean Sea, Atlantic Ocean

Juergen Freund / Grey reef sharks (Carcharhinus amblyrhynchos) group, one with Remora (Remora) Coral Sea, Great Barrier Reef, Queensland, Australia.

Pascal Kobeh / Two Grey reef sharks (Carcharhinus amblyrhynchos) in a school of Bonitos / Amberjacks (Sarda ou Seriola ) Palau. Philippine Sea.

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) in feeding frenzy very close to shore, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) tip just visible above sea surface, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) swimming in shallow crystal clear water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) approaching Grey heron (Ardea cinerea) in shallow water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus), Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) swimming in shallow crystal clear water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) profile of dorsal fin, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) underside view of group patrolling shallow waters, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) approaching Grey heron (Ardea cinerea) in shallow water, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) swimming in mangrove forest, reflections above, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reefs shark (Carcharhinus melanopterus) swimming in shallow water at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus), Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reefs sharks (Carcharhinus melanopterus) dorsal fins visible at sea surface at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reefs shark (Carcharhinus melanopterus) swimming in shallow water at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus), swimming at night, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reefs shark (Carcharhinus melanopterus) swimming in shallow water at dusk, Aldabra Atoll, Seychelles, Indian Ocean

Cheryl-Samantha Owen / Blacktip reef shark (Carcharhinus melanopterus) in split level view in shallow water, Aldabra Atoll, Seychelles

Cheryl-Samantha Owen / Blacktip reef sharks (Carcharhinus melanopterus) in shallow above sandy seabed, Aldabra Atoll, Seychelles, Indian Ocean

Francis Abbott / Blacktail Reef Shark. Red Sea (Carcharhinus wheeleri)

Francis Abbott / Blacktail Reef Shark. Red Sea (Carcharhinus wheeleri)

Francis Abbott / Female Blacktail Reef Shark (Carcharhinus wheeleri) Maldives

Francis Abbott / Blacktail reef shark, Red Sea (Carcharhinus wheeleri)

Francis Abbott / Blacktail Reef Shark, Red Sea

Noemie Stroh / Yellowfin surgeonfish (Acanthurus xanthopterus) aggregation above coral reef. Grey reef shark (Carcharhinus amblyrhynchos) juveniles are patrolling the school. Ohotu reef, North Fakarava, French polyn...

Noemie Stroh / Yellowfin surgeonfish (Acanthurus xanthopterus) aggregation above coral reef. Grey reef shark (Carcharhinus amblyrhynchos) juveniles are patrolling the school. Ohotu reef, North Fakarava, French polyn...

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juveniles swimming under water surface, Mahaiula, North Kona, Hawaii, United States, Pacific Ocean.

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juveniles swimming under water surface, Mahaiula, North Kona, Hawaii, United States, Pacific Ocean.

Doug Perrine / Two Gray reef shark (Carcharhinus amblyrhynchos) juveniles swimming under water surface with Triggerfish (Balistidae sp.) behind, Mahaiula, North Kona, Hawaii, United States, Pacific Ocean.

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juveniles swimming under water surface, Mahaiula, North Kona, Hawaii, United States, Pacific Ocean.

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juvenile swimming towards another shark breaking the surface with its fin, Mahaiula, North Kona, Hawaii, United States, Pacific Ocean.

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juvenile swimming over reef with Bluestripe snapper (Lutjanus kasmira) shoal and Pinktail triggerfish (Melichthys vidua) behind, Mahaiula, North Kona, Hawa...

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos) juveniles and Bluestripe snapper (Lutjanus kasmira) swimming through channel formed by collapsed lava tube, Mahaiula, North Kona, Hawaii, USA, Pacific Ocea...

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos) swimming, Yap, Micronesia, Pacific Ocean.

Doug Perrine / Hawaiian hogfish (Bodianus albotaeniatus) male, with Bluestripe snapper (Lutjanus kasmira), and Black durgon triggerfish (Melichthys niger) swimming over reef with juvenile Gray reef sharks (Carcharhi...

Doug Perrine / Gray reef shark (Carcharhinus amblyrhynchos), juvenile, with fish hook in mouth, swimming through shoal of Bluestripe snapper (Lutjanus kasmira) on coral reef, North Kona, Hawaii, Pacific Ocean.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos) with endemic Hawaiian cleaner wrasse (Labroides phthirophagus) in mouth, Pacific Ocean, Hawaii, USA.

Alex Mustard / Grey reef sharks (Carcharhinus amblyrhynchos) patrols a reef dropoff, with triggerfish and spotted eagle rays. Rasdhoo Atoll, Maldives. Indian Ocean.

David Fleetham / Grey reef shark (Carcharhinus amblyrhynchos), two on patrol. Yap, Micronesia.

Noemie Stroh / Grey reef shark (Carcharhinus amblyrhynchos) swimming, Shaab Rumi, Red Sea, Sudan.

Frederique Olivier / Grey reef shark (Carcharhinus amblyrhynchos) swimming towards camera, Uepi Island, Solomon Islands.

Frederique Olivier / Black tip reef shark (Carcharhinus melanopterus) swimming in a group, with a Grey reef shark (Carcharhinus amblyrhynchos) nearby, Uepi Island, Solomon Islands.

Frederique Olivier / Mixed shoal of Silver moony fish (Monodactylus argenteus) and Goldband fusiliers (Pterocaesio chrysozona), parts to reveal a Grey reef shark (Carcharhinus amblyrhynchos), Uepi Island, Solomon Islands.

Frederique Olivier / Grey reef shark (Carcharhinus amblyrhynchos) swimming, with a Remora (Echeneis), Uepi Island, Solomon Islands.

Frederique Olivier / Three Grey reef sharks (Carcharhinus amblyrhynchos) swimming, one with a Remora (Echeneis), Uepi Island, Solomon Islands.