Saltwater crocodile at Yellow Water Wetlands and Billabong, Kakadu National Park, UNESCO World Heritage Site, Northern Territory, Australia, Pacific

Saltwater crocodile in Yellow Water billabong and wetland, Kakadu National Park, Northern Territory, Australia, Pacific

Wild saltwater crocodile (Crocodylus porosus) on the banks of the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) hunting on the banks of the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

Wild saltwater crocodile (Crocodylus porosus) head detail in porous creek on the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

Wild saltwater crocodile (Crocodylus porosus) head detail in porous creek on the Hunter River, Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) in the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) hunting on the banks of the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) on the banks of the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) in the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

An adult wild saltwater crocodile (Crocodylus porosus) in the Hunter River in Mitchell River National Park, Kimberley, Western Australia, Australia, Pacific

A diver admires in awe a big aggregation of jack fishes in the waters of Cabo Pulmo Marine National Park, where marine biomass has increased exponentially since the marine park was established, Baja California Sur, Mexico

Mountain landscape with llamas (Lama glama), Alpacas (Vicugna pacos) and flamingos (Phoenicoparrus), salt lake Salar de Surire, national park Reserva Nacional Las Vicunas, Chile, South America

Scalloped hammerhead shark swimming among other fish over the seabed, Galapagos Islands