Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

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

Georgette Douwma / Bigeye / Goggle-eye (Priacanthus hamrur) showing colour change from deep red to silver. Sipadan, Malaysia.

Peter Scoones / Goggle eye / Common bigeye fish schooling {Priacanthus hamrur} Sipadan, Malaysia

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...

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

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) and Crown squirrelfish (Sargocentron diadema) on wreck colonised by corals, Red Sea, Egypt. January.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) with some changing colour from silver to bright red and back again. Andaman Sea, Thailand.

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

Pascal Kobeh / Atlantic bigeye (Priancanthus arenatus) Sal Island, Cape Verde. Atlantic Ocean.

Solvin Zankl / Five Moontail bullseye / Goggle eye (Priacanthus hamrur) four orange, one silver, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Georgette Douwma / Bigeye or Goggle-eye (Priacanthus hamrur) large school over reef. Egypt, Red Sea.

Georgette Douwma / Shoal of Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Egypt, Red Sea.

Georgette Douwma / Big eye / Goggle eye fish (Priacanthus hamrur) large shoal over reef, Egypt, Red Sea

Georgette Douwma / Big-eye / Goggle-eye fish (Priacanthus hamrur) shoal on wreck, Egypt, Red Sea

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

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

Georgette Douwma / Two Big-eye / Goggle-eye (Priacanthus hamrur) on coral reef, Egypt, Red Sea

Georgette Douwma / Big-eye / Goggle-eye (Priacanthus hamrur) on coral reef, Egypt, Red Sea

Georgette Douwma / Big-eye / Goggle-eye (Priacanthus hamrur) on coral reef, Egypt, Red Sea

Graham Eaton / Crescent-tail Bigeye / Goggle eye (Priacanthus hamrur) Egypt, Red Sea, July

Georgette Douwma / Goggle-eye (Preacanthus hamrur) with dead branching coral covered by algae in background. Papua New Guinea

Georgette Douwma / Goggle-eye (Preacanthus hamrur) on coral reef with featherstars. Rinca, Indonesia

Juergen Freund / Goggle Eye Fish (Priacanthus hamrur), Queensland, Australia. Also known as Lunar-tailed bigeye, or moontail bullseye.

Juergen Freund / Goggle eyes / Bigeye fish {Priacanthus hamrur} Indo pacific

Brent Hedges / Goggle eye fish / Crescent tail bigeye {Priacanthus hamrur} amongst hard coral, Coral Sea, Australia

Doug Perrine / Goggle eye fish / Bigeye {Priacanthus hamrur} Helengeli, Maldives

Doug Perrine / Two colour phases of Goggle eye fish {Priacanthus hamrur} Sipadan, Sabah, Borneo, Malaysia

Jeff Rotman / Goggle eye fish face close-up (Priancanthus hamrur) Red Sea.

Jeff Rotman / Goggle eye fish close up of face (Priancanthus hamrur) Red Sea.

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

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

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...

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