This striking astronaut photo shows a unique chain of three atolls lined up side-by-side off the coast of Australia. The oval islands were once part of a colossal coral system that rivaled the Great ...

From Tasmania to the Torres Strait, Australia and its external territories comprise 8,222 islands scattered throughout the Pacific, Indian and Southern Oceans, as well as the Coral and Timor Seas.

A 2015 satellite photo captured a series of stunning "von Kármán vortices" swirling off Madeira and the Canary Islands. The giant swirls are collectively one of the best examples of this ...

Northern Territory residents have been rocked by a strong offshore earthquake which has rattled the Top End. Geoscience ...

A teenage Australian surfer feared lost at sea was rescued after spending the night on an uninhabited island miles offshore, ...

— -- An Australian navy survey ship has located the submerged MV-22 Osprey that went down off the east coast of Australia with 26 military personnel on board, 23 of whom were rescued. Three U ...

A vast bloom of toxic algae is killing more than 200 species of marine life off the southern coast of Australia, scientists and conservation groups say. The algae—Karenia mikimotoi—appeared in ...

An Australian diver spotted a rare all-white stingaree while diving off the Rye, Victoria, in late April. ... While swimming off the Rye coast in Victoria, Australia, ...