Chinstrap penguins share a beach with a pair of Antarctic fur seals.

Chinstrap penguins on a rocky beach at Seal Island.

Antarctic fur seals and chinstrap penguins at Seal Island.

A biologist walks along the edge of a chinstrap penguin colony on Seal Island.

Glacier, South Shetland Islands.

A humpback whale diving.

A humpback whale diving showing its flukes.

A group of chinstrap penguins near an icy bay, South Shetland Islands.

An elephant seal bull with his harem.

An Antarctic tern taking flight.

Antarctic fur seal pups bask among whale bones.

A gentoo penguin chick defecates outside of its nest.

A gentoo penguin chick defecates outside of its nest.

An Antarctic tern resting on an ice floe.

A southen giant petrel and its chick rest together on a mossy hill of rocks.

Sunrise over an Antarctic mountain range.

An Antarctic shage forages for nest-building materials in the algae-covered intertidal rocks of Livingston Island.

A brown skua watches over its two young chicks as they explore the area around their nest.

Low clouds over the South Shetland Islands.

Icebergs, South Shetland Islands.

An adult gentoo penguin feeding its chick. Gentoo penguins eat fish, crustaceans and squid, and parents regurgitate partially digested food to provide their chicks with nourishment until they are able to hunt on their own. Gentoos are the largest penguin in their genus (Pygoscelis).

Chinstrap penguin chicks huddle for warmth.

A chinstrap penguin colony with icebergs in the distance.

An iceberg in the South Shetland Islands.

Melting ice at the edge of a glacier, King George Island.

Glacier, King George Island.

Close view of a humpack whale, South Shetland Islands.

AMLR researcher Adam Jenkins next to an iceberg.

AMLR scientists Dr. Roger Hewitt and Adam Jenkins.

AMLR scientists Steve Sessions and Adam Jenkins.

AMLR scientist Adam Jenkins drives a Zodiac near the R/V Yuzhmorgeologiya.

The aft deck of the R/V Yuzhmorgeologiya.

Please don't slam the doors. AMLR scientists and Russian crew worked diligently to maintain good communication, even under less-than-ideal conditions.

Pelagic tunicates called salps on a rocky beach, South Shetland Islands.

Whalebone debris on a beach in the South Shetland Islands, a clue to the area's history as a whaling center.

The crew at the Copacabana field station, King George Island.

Scientists offload supplies onto the landing beach at Cape Shirreff, Livingston Island.

Myctophid fish.

Antarctic fur seals on an icy beach.

A gentoo penguin with chick, King George Island.

Gentoo penguin chicks, King George Island.

An adult gentoo penguin, King George Island.

An iceberg, with most of its mass clearly visible underwater.

An iceberg seen through the port hole of the R/V Yuzhmorgeologiya.

An iceberg near Seal Island.

An iceberg near Seal Island.

A sample of Antarctic krill, Euphausia superba.

A leopard seal, Hydrurga leptonyx, swims near Seal Island.

Survey tracklines from the AMLR 2004 research cruise.

Myctophid fish.