Tourists snorkle in clear blue seas off the coast of a desert island. pre-dawn

Tourists snorkle in clear blue seas off the coast of a desert island. pre-dawnTourists snorkle in clear blue seas off the coast of a desert island. Jones Island, Bairds Bay, South Australia, Australia.

an aphid predator

Sunset touches the edge of a tropical storm front over Tanzania

A dusting of sand lies across the carapace of a sea turtle napping on the ocean floor

Detail of a flipper and claw of an endangered southern elephant seal

A dance of sunlight filters down from the shallow surface

L'Haridon Bight

Habarana Tank

A lake fills with mineral-rich turquoise water from a glacier run-off

Barnacles and other encrusting organisms on a discarded bottle

Bright red Aurantiporus pulcherrimus bracket fungi on a Myrtle Beech

Fars Province

A strangler fig vine encases a huge rainforest tree trunk