<p>Gentoo penguins have plenty to be apprehensive about when entering Antarctica's frigid waters. To reach the summer's bounty of fish, squid and krill, they often must negotiate a phalanx of hungry sea leopards.</p>

Gentoo Penguin

Gentoo penguins have plenty to be apprehensive about when entering Antarctica's frigid waters. To reach the summer's bounty of fish, squid and krill, they often must negotiate a phalanx of hungry sea leopards.

Photograph by Paul Nicklen, National Geographic

Seabirds

As at home on the water as they are on land, these birds can list swimming, diving, and fishing on their impressive avian resumes.

Read This Next

A giant mass of seaweed threatens beach season in the U.S.
The woman who helped save Egypt's temples from doom

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet