Edwin Giesbers / Saltwater crocodile (Crocodylus porosus) close up portrait, Sarawak, Borneo, Malaysia

Michael Pitts / Saltwater crocodile underwater {Crocodylus porosus} Kakadu NP, NT, Australia

Konrad Wothe / Estuarine / Saltwater crocodile (Crocodylus porosus) amongst mangrove roots, Daintree National Park, Queensland, Australia, October

Ingo Arndt / Saltwater Crocodile (Crocodylus porosus) swimming, Northern Territory, Australia

Edwin Giesbers / Two Saltwater crocodiles (Crocodylus porosus) with heads raised out of water, Sarawak, Borneo, Malaysia

Andy Rouse / Saltwater crocodile (Crocodylus porosus) striking, Northern Territories, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) swimming underwater, New Guinea, Indo-pacific

Juergen Freund / Looking up at a Saltwater crocodile (Crocodylus porosus) swimming at water surface, New Guinea, Indo-pacific

Juergen Freund / Saltwater crocodile (Crocodylus porosus) swimming at surface, split-level, New Guinea, Indo-pacific

Juergen Freund / Saltwater crocodile (Crocodylus porosus) swimming underwater, New Guinea, Indo-pacific

Juergen Freund / Saltwater crocodile (Crocodylus porosus) swimming at water surface, split-level, New Guinea, Indo-pacific

Juergen Freund / Saltwater crocodile (Crocodylus porosus) jumping out of water to catch dangling bait in Hartley's Creek crocodile farm, Queensland, Australia