Shane Gross / A juvenile soldierfish, possibly a Crescent-tail bigeye (Priacanthus hamrur) in the open ocean at night off Anilao, Philippines.

Ralph Pace / Silky Shark (Carcharhinus falciformis), Galapagos Shark (Carcharhinus galapagensis), Dusky Shark (Carcharhinus obscurus), and Black-tip Shark (Carcharhinus limbatus) group working with Yellowfin Tuna...

Ralph Pace / Silky Shark (Carcharhinus falciformis), Galapagos Shark (Carcharhinus galapagensis), Dusky Shark (Carcharhinus obscurus), and Black-tip Shark (Carcharhinus limbatus) group working with Yellowfin Tuna...

Georgette Douwma / Big-eye fish (Priacanthus hamrur). Egypt, Red Sea.

Doug Perrine / Scuba diver films bait ball of Bigeye scad (Selar crumenopthalmus) Keauhou Bay, Kona, Hawaii, Hawaiian Islands. Central Pacific ocean. March 2010. Model released.

Franco Banfi,Franco Banfi / Local man looking down at shoal of Bigeye scad (Selar crumenophthalmus) Waigeo island, Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Pete Oxford / Horse eye trevally / jack (Caranx latus) Jardines de la Reina National Park Cuba, Caribbean

Fred Bavendam / Crescent-tail Bigeye (Priacanthus hamrur) in front of a sea fan, Uepi Island, Solomon Islands

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Note colour change from deep red to silver. Egypt, Red Sea

Juergen Freund / Big eye jack school just under surface (Caranx sexfasciatus) Indo-Pacific.

Gerry Ellis / African Elephant (Loxodonta africana) portrait of female, taken with a wide-angle lens, David Sheldrick Wildlife Trust, Tsavo East National Park, Kenya

Norbert Wu / Bottlenose Dolphin (Tursiops truncatus) chases a school of Bigeye Scad (Selar crumenophthalmus), Roatan, Honduras