Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) school, 40 feet deep, Solomon Islands

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) schooling, 30 feet deep, Solomon Islands

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) school, 40 feet deep, Solomon Islands

Norbert Wu / Bigeye Trevally (Caranx sexfasciatus) school form a moving circle, Borneo

Fred Bavendam / Bigeye Trevally (Caranx sexfasciatus) school with diver, Bali, Indonesia

Alex Mustard / Black and white photo of school of Bigeye trevally (Caranx sexfasciatus) form a circular shoal in open water, on the drop off of a coral reef. Ras Mohammed National Park, Sinai, Egypt. Red Sea. Highly...

Gary Bell/ Oceanwide / Bigeye Trevally (Caranx sexfasciatus) school, Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Bigeye Trevally (Caranx sexfasciatus) school under pier, Great Barrier Reef, Australia

Franco Banfi / Scuba diver swimming with a big shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Scuba diver on the sandy bottom surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Scuba diver on the sandy bottom surrounded by shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Big Gulf grouper (Mycteroperca jordani) in front of a Shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Scuba diver swim between shoal of Dog snapper, (Lutjanus novemfasciatus) and shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Franco Banfi / Shoal of Dog snapper, (Lutjanus novemfasciatus) in front of shoal of Big-eye jacks (Caranx sexfasciatus), Cabo Pulmo Marine National Park, Baja California Sur, Mexico

Alex Mustard / Few fish from a school of Bigeye trevally (+Caranx sexfasciatus) break off to scratch themselves against the flank of a blacktip reef shark (Carcharhinus melanopterus). This is a common and world wide...

Alex Mustard / Long exposure of school of Bigeye trevally (Caranx sexfasciatus) swimming in front of a jetty, close to sunset. Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea. Tropical West Pacific Ocean.

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Nick Hawkins / Divers observing large school of Bigeye trevally (Caranx sexfasciatus). Near Cocos Island National Park, Costa Rica.

Nick Hawkins / Bigeye trevally (Caranx sexfasciatus), a large shoal. Cocos Island National Park, Costa Rica.

Alex Mustard / Bigeye trevally (Caranx sexfasciatus) swim in front of volcanic boulders. Darwin Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean.

Alex Mustard / Bigeye trevally (Caranx sexfasciatus) forming a circular shoal in blue water, on the drop off of a coral reef. Ras Mohammed National Park, Sinai, Egypt. Red Sea

David Fleetham / Green sea turtle (Chelonia mydas) swimming through a school of Bigeye jacks (Caranx sexfasciatus) off the island of Sipidan, Malaysia.

Alex Mustard / Large school of Bigeye jacks (Caranx sexfasciatus) over a coral reef, made up of predominantly Acropora sp. hard corals. Tubbataha reef, Tubbataha Reefs Natural Park, UNESCO World Heritage Site Palawa...

Franco Banfi / Shoal of Bigeye Jack (Caranx sexfasciatus) Malpelo Island National Park, UNESCO World Heritage Site, Colombia, East Pacific Ocean

Franco Banfi / Shoal of Bigeye jack (Caranx sexfasciatus) Malpelo Island National Park, UNESCO World Heritage Site, Colombia, East Pacific Ocean

Franco Banfi / Shoal of Bigeye jack (Caranx sexfasciatus) Malpelo Island National Park, UNESCO World Heritage Site, Colombia, East Pacific Ocean

Claudio Contreras / Bigeye Trevally (Caranx sexfasciatus), Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March

Claudio Contreras / Bigeye Trevally (Caranx sexfasciatus), San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico, March

Claudio Contreras / Silky Shark (Carcharhinus falciformis) and Bigeye Trevally (Caranx sexfasciatus), Silky Shark IUCN Near Threatened, San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands),...

Claudio Contreras / Bigeye Trevally (Caranx sexfasciatus), San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Islands), Pacific O...

Claudio Contreras / Bigeye Trevally (Caranx sexfasciatus), San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Islands), Pacific O...

Claudio Contreras / Bigeye Trevally (Caranx sexfasciatus), Roca Partida Islet, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Islands), Pacific Oce...

Pascal Kobeh / Bigeye trevally or jacks (Caranx sexfasciatus) large shoal, Panama, Pacific Ocean

Alex Mustard / Diver photographing a school of Big eye trevally (Caranx sexfasciatus). South Atoll, Tubbataha Atolls, Tubbataha Reefs Natural Park, Palawan, Philippines. Sulu Sea.

Alex Mustard / School of Crescent-tail bigeyes (Priacanthis hamrur) swims in front of a school of Bigeye jacks (Caranx sexfasciatus). Ulong Island, Rock Islands, Palau, Micronesia. Tropical west Pacific Ocean.

Georgette Douwma / Bigeye trevally (Caranx sexfasciatus) school over coral reef. Sipadan, Malaysia.

Georgette Douwma / Diver photographing a school of Bigeye trevally (Caranx sexfasciatus) Sipadan, Malaysia. November 2015.

Franco Banfi / Shoal of Bigeye trevally (Caranx sexfasciatus) Tulamben, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Shoal of Bigeye trevally (Caranx sexfasciatus) Tulamben, Bali Island, Indonesia, Pacific Ocean

Franco Banfi / Shooling Bigeye jack (Caranx sexfasciatus) and Pacific creolefish (Paranthias colonus) Cocos Island National Park, Costa Rica.

Alex Mustard / Huge school of Bigeye trevally (Caranx sexfasciatus) swimming over a coral reef. South Atoll, Tubbataha Atolls, Tubbataha Reefs Natural Park, Palawan, Philippines. Sulu Sea.

Alex Mustard / Huge school of Bigeye trevally (Caranx sexfasciatus) swimming over a coral reef. South Atoll, Tubbataha Atolls, Tubbataha Reefs Natural Park, Palawan, Philippines. Sulu Sea.

Georgette Douwma / Bigeye trevally or jack (Caranx sexfasciatus) shoal, Sipadan, Malaysia.

Aflo / Bigeye trevally (Caranx sexfasciatus) shoal swimming, Kume Island, Japan. December.

Aflo / Diver approaching large shoal of Bigeye trevally (Caranx sexfasciatus) shoal swimming, Kume Island, Japan. December.

Pascal Kobeh / School of Bigeye trevally / jacks (Caranx sexfasciatus), Cocos island, Costa Rica. Pacific ocean.

Pascal Kobeh / Diver in a school of Bigeye trevally / jacks (Caranx sexfasciatus), Cocos island, Costa Rica. Pacific ocean. December 2010.

Pascal Kobeh / Diver in a school of Bigeye trevally / jacks (Caranx sexfasciatus), Cocos island, Costa Rica. Pacific ocean. December 2010.

Pascal Kobeh / Diver in front of a school of Bigeye trevally / jacks (Caranx sexfasciatus), Cocos island, Costa Rica. Pacific ocean. December 2010.

Pascal Kobeh / School of Bigeye trevally / jacks (Caranx sexfasciatus) Palau. Philippine Sea.

Pascal Kobeh / Grey reef shark (Carcharhinus amblyrhinchos) surrounded by Bigeye trevally / jacks (Caranx sexfasciatus) Palau. Philippine Sea.

Michael Pitts / Bigeye trevally (Caranx papuensis) school. Blue Corner, Palau, Western Pacific.

Georgette Douwma / Bluefin jacks (Caranx sexfasciatus) following a hunting moray eel. Egypt, Red Sea.

Juergen Freund / RF- Green turtle (Chelonia mydas) with reef fish and schooling Bigeye jacks / trevally (Cranax sexfasciatus) in the background. Sipadan Island, Sabah, Malaysia, June. Endangered species. (This image...

Fred Bavendam / Bigeye Trevally (Caranx sexfasciatus) forming a dense school, Great Barrier Reef, Australia

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) school, 40 feet deep, Solomon Islands

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) school, 40 feet deep, Solomon Islands

Hiroya Minakuchi / Bigeye Trevally (Caranx sexfasciatus) school swimming off Sipadan Island, Celebes Sea, Borneo

Hiroya Minakuchi / Bigeye Trevally (Caranx sexfasciatus) school swimming off Sipadan Island, Celebes Sea, Borneo

Hiroya Minakuchi / Bigeye Trevally (Caranx sexfasciatus) school swimming over coral reef, Sipadan Island, Celebes Sea, Borneo

Mike Parry / Bigeye Trevally (Caranx sexfasciatus) schooling, Papua New Guinea

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) school, Osprey Reef, Coral Sea

Chris Newbert / Bigeye Trevally (Caranx sexfasciatus) schooling 40 feet deep, Solomon Islands

Birgitte Wilms / Bigeye Trevally (Caranx sexfasciatus) schooling 30 feet deep, Solomon Islands

Norbert Wu / Bigeye Trevally (Caranx sexfasciatus) gather in massive groups on coral reefs by day, hunt at night, Solomon Islands

Fred Bavendam / Bigeye Trevally (Caranx sexfasciatus) school, Bali, Indonesia

Fred Bavendam / Bigeye Trevally (Caranx sexfasciatus) school, Bali, Indonesia

Gary Bell/ Oceanwide / Bigeye Trevally (Caranx sexfasciatus) school under pier, Great Barrier Reef, Australia

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Ralph Pace / Bigeye Trevally (Caranx sexfasciatus) school, Cabo Pulmo National Park, Baja California, Mexico

Pete Oxford / Bigeye Trevally (Caranx sexfasciatus) school over coral reef, Raja Ampat Islands, Indonesia

Norbert Wu / Bigeye Trevally (Caranx sexfasciatus) school, Revillagigedos Islands, Mexico

Lucas Bustamante / Bigeye trevallies (Caranx sexfasciatus) shoal. Darwin Island, Galapagos National Park, Pacific Ocean.

Henley Spiers / Enormous school of Bigeye trevally (Caranx sexfasciatus) in the protected waters of Cabo Pulmo National Park, Baja California Sur, Mexico, Pacific Ocean.

Noemie Stroh / Bigeye trevally (Caranx sexfasciatus) schooling, Cabo Pulmo National Park, Baja California, Mexico, December.

Noemie Stroh / Bigeye trevally (Caranx sexfasciatus) schooling, Cabo Pulmo National Park, Baja California, Mexico, December.

Noemie Stroh / Bigeye trevally (Caranx sexfasciatus) schooling with Diamond stingray (Dasyatis brevis) swimming past, Cabo Pulmo National Park, Baja California, Mexico, December.

Magnus Lundgren / Scuba diver investigating a school of Big-eye trevally (Caranx sexfasciatus) congregating around a small pier, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Tui De Roy / Bigeye trevally (Caranx sexfasciatus) schooling off wall, Wolf Island, Galapagos, South America, Pacific Ocean.

Noemie Stroh / Tiger shark (Galeocerdo cuvier) swimming through a school of Bigeye jack (Caranx sexfasciatus), Cocos Islands, Costa Rica.

Noemie Stroh / School of Bigeye jack (Caranx sexfasciatus), Red Sea, Darhat Abid, Sudan.

Shane Gross / Colorful coral reef scene with feather stars (crinoids), magenta slender anthias (Luzonichthys waitei) and a School of Bigeye jacks / trevally (Caranx sexfasciatus), Kimbe Bay, Papua New Guinea.