Steven David Miller / Saltwater crocodile (Crocodylus porosus), close up of teeth. Rainforest Station, Kuranda, Queensland, Australia. Captive.

Rick Price / Estuarine crocodile (Crocodylus porosus) basking on mudbank below cliff. Prince Frederick Harbour, Hunter River, The Kimberley, Western Australia. 2016.

Rick Price / Estuarine crocodile (Crocodylus porosus) basking on mudbank below cliff. Prince Frederick Harbour, Hunter River, The Kimberley, Western Australia. 2016.

Rick Price / Estuarine crocodile (Crocodylus porosus) basking on mudbank. Prince Frederick Harbour, Hunter River, The Kimberley, Western Australia.

Ashley Cooper / Tourists watching Saltwater crocodile (Crocodylus porosus), at Hartleys Crocodile Farm north of Cairns in Queensland, Australia. The animals are raised mainly for their skins, with meat being a by pro...

Juergen Freund / Saltwater crocodile (Crocodylus porosus) hatchling resting on tree trunk, Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) baby hatching out of its egg shell, Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) hatching out of its egg shell, Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) swimming stealthily along the Daintree River, Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile hatchling (Crocodylus porosus) Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) resting on the banks along the Daintree River, Daintree , Queensland, Australia

Juergen Freund / Saltwater crocodile (Crocodylus porosus) hatchling swimming,, Daintree, Queensland, Australia