Blown glass floats are visible on these fishing nets, before they are cast.

A trawl net on the stern of a commercial fishing vessel.

Large krill catch aboard in the South Shetland Islands aboard the R/V Professor Siedlecki.

Trawling gear on the stern of the R/V Professor Siedlecki.

Invertebrates caught in a benthic (seafloor) net haul.

A fine-mesh net designed to catch zooplankton, tiny creatures swimming in the water column.

Dr. Roger Hewitt with a borrowed CTD (named "Clarence"), during hydographic studies off South Georgia.

Floating ice in the Southern Ocean.

NOAA ship Surveyor electronic technician Ronnie ("ZZ").

Antarctic scientist, Dr. Roger Hewitt.

Tracks leading up to a snowy pinnacle.

The largest salp catch in February 1993 was several liters.

An iceberg sculpted by wind and waves.

SCUBA divers emerge beside a Zodiac from the icy depths of Admiralty Bay during the 1995 field season.

A pair of SCUBA divers look to climb out of the icy water and back aboard the Zodiac. Water temperatures in the Southern Ocean hover around 34 degrees Fahrenheit.

A SCUBA diver in the icy Southern Ocean.

Michael Force, bird observer and zooplankton team member, is alert for marine mammals during the Drake Passage transit.

An IKMT is deployed from the stern of the R/V Yuzhmorgeologiya.

Dr. Roger Hewitt in Chief Scientists' cabin.

Part of the 1996 AMLR crew, aboard the R/V Yuzhmorgeologiya.

An iceberg at the moment it cleaves a large chunk of ice.

Yuzhmorgeologiya Captain and Dr. David Demer.

Dr. Valerie Loeb, an Antarctic krill expert.

AMLR's current director, Dr. George Watters, holds up two fish samples.

Dr. Rennie Holt does an on-the-spot specimen dissection in frigid weather.

Devils Bellows, the entry to Deception Island.

The volcanic origins of the South Shetland Islands are evident in this cliffside formation.

The volcanic origins of the South Shetland Islands are evident in this cliffside formation.

A tabular iceberg afloat in the Southern Ocean.

A tabular iceberg, being reshaped by the wind and ocean.

Drs. Osmund Holm-Hansen with Tony Amos on the R/V Surveyor.

A scientist prepares a CTD rosette, with bottles to collect seawater samples.

A trawl net, used to collect zooplankton and pelagic fish samples.

Researchers deploy a small RHIB (Rigid-Hulled Inflatable Boat) from the main research vessel.

A beautiful crystalline ice formation.

The sailing board for the NOAA ship Surveyor in 1991.

The NOAA Ship Surveyor was used by the AMLR Program from 1990 through 1995.

An AMLR researcher sorts the most recent catch of zooplankton aboard the R/V Surveyor.

Fur seals and chinstrap penguins congregate around a rocky inlet on Seal Island, in the South Shetland Islands.

A helicopter makes a beach landing at the Seal Island field station.

A penguin biologist with good humor.

The AMLR field station at Seal Island.

Chinstrap penguins and elephant seals share the beach at Seal Island.

Chinstrap penguins congregate at a snowy pinnacle in Seal Island.

A seaside colony of chinstrap penguins at Seal Island in 1991.

A seaside colony of penguins at Seal Island in 1991.

An Adelie penguin colony, with an observation shack visible in the distance .

A seaside colony of penguins at Seal Island in 1991.

Chinstrap penguins at Seal Island in 1991.

Penguins and seals around a rocky cove at Seal Island, 1991.