2015 $1 Australian Saltwater Crocodile 1oz Silver Proof CoinThe Australian Saltwater Crocodile is the largest reptile in the world in terms of body mass and is found in suitable habitats from northern Australia through Southeast Asia to the eastern coast of India. The reverse depicts a saltwater crocodile with its jaws open, exposing its sharp teeth. The design includes the inscription AUSTRALIAN SALTWATER CROCODILE, The Perth Mint's P mintmark.