A lake in Palau contains a startling surplus of golden medusae.

A semi-wild species has the run of a functioning city.

How an unlikely seagoing species emerged in Montego Bay.

On Louisiana’s Avery Island, a colorful and can-do flower thrives.

Come mating time, the King-of-Saxony male makes a ruckus. Collaboration: Cornell Lab of Ornithology.

No creature on the planet mates quite like this.

The world's only swimming lizard.

A predatory invertebrate strikes from inside its ocean burrow.

Underneath a roof of ice, the world’s southernmost mammal takes the plunge.

Discarded shells are shelters for this underwater species in Anilao. Beer cans, too.

An aristocratic pastime involves training, admiring—and almost becoming—a bird of prey.

A male bird-of-paradise performs a dramatic courtship dance. Collaboration: Cornell Lab of Ornithology.

The giant, noisy summer colony of Quebec’s Gaspé Peninsula.

Will Borneo’s big-nosed, pot-bellied primate swing and swim in the wild for much longer?

In America's first national park, an iconic omnivore roams an extremely varied path.

In winter, a Wyoming town welcomes to the world’s largest gathering of elk.

An encounter with the Serengeti's most endangered species.

Iberia’s indigenous wild goat goes where other four-legged creatures can’t.

Stealthy habits and GPS collars have helped Western Europe’s rarest wildcat hang on.

A bird woos mates with a "bow, walk, pause and waggle." Collaboration: Cornell Lab of Ornithology.

Sichuan’s Anzihe Nature Reserve has more giant pandas per square mile than anywhere else

In the Atlas mountains, the Mediterranean’s only non-human primate species hangs on.