Penguin biologists William Meyer and John Jansen prepare to weigh penguin chicks.

Biologists Lisa Hiruki-Raring and William Meyer with their research subjects.

Penguin biologist Lisa Hiruki-Raring preparing to weigh a chinstrap penguin.

Southern elephant seals at a wallow. Elephant seals gather in these wallows, or muddy pits, during their molting season, and use the mud and friction to help shed dead skin. Wallows have a very strong odor made up of seal musk and feces, and are comprised of thick, peaty mud.

The field camp at Seal Island.

The setting Antarctic sun is reflected in the alpenglow on the mountains of Livingston Island.

A Zodiac, useful in shallow waters and when attempting to tag animals at sea.

AMLR scientists construct the Seal Island field station during their first field season.

A chinstrap penguin investigates the prefab field camp at Seal Island.

An AMLR scientist with telemetry equipment at Seal Island, South Shetland Islands.

A storm approaching Cape Shirreff, Livingston Island.

A team of AMLR scientists pushes their Zodiac off the beach at Seal Island to an area deep enough to lower the outboard motor.

Molting elephant seals.

Antarctic fur seal pup .

AMLR biologists walk to the bird blind at Seal Island, where they can monitor penguin behavior without disturbing the penguin colony.

Field biologists at Seal Island wave goodbye to their supply ship.

A Weddell seal on the ice

A seal with a telemetry tag in 1990.

A seal with a telemetry tag in 2005.

A biologist at a chinstrap penguin colony on Seal Island.

A seal colony with two satellite-tagged seals.

A sheathbill with chick.

The Seal Island field camp.

A chinstrap penguin with chick.

A cliffside colony of chinstrap penguins at Seal Island.

A group of macaroni penguins.

A group of fur seal pups after a swim.

A cliffside penguin colony in the South Shetland Islands.

Veteran Antarctic seal biologist Dr. Mike Goebel with a fur seal pup.

A Weddell seal.

A Weddell seal with an instrument that records location and depth.

A crabeater seal at Seal Island, South Shetland Islands.

Chinstrap penguins enter the surf on Seal Island.

A southern giant petrel chick sits on its nest, awaiting the return of its parents and the anticipated meal that accompanies their arrival.

A snowy sheatbill and its chick are seen walking amidst the rocks.

A rare blonde color morph of the Antarctic fur seal.

An adult chinstrap penguin with chicks.

A young Antarctic fur seal.

Antarctic fur seals and chinstrap penguins on a beach at Seal Island.

Dr. Roger Hewitt drives one of the AMLR Zodiacs from Seal Island to the R/V Surveyor.

A chinstrap penguin colony on Seal Island.

A young Antarctic fur seal explores the AMLR field station at Seal Island.

Two chinstrap penguins in the surf at Seal Island.

A Zodiac brings supplies to the AMLR field station at Seal Island.

AMLR scientist McKenzie Mudge with a fur seal pup.

The AMLR field station at Seal Island.

A rare blonde color morph of the Antarctic fur seal rests on the beach.

Constructing the Weatherport living structure at Seal Island.

Chinstrap penguins and seals at North Cove, Seal Island.

A Weddell seal at North Cove, Seal Island.