Icebergs calved off the Sawyer tidewater Glacier in Tracy Arm, Southeast Alaska, USA.

Harbor Seal (Phoca vitulina) mother and pup on ice calved from the Sawyer Glaciers in Tracy arm, Southeast Alaska, USA. Pacific Ocean.

Harbor Seal (Phoca vitulina) mother and pup on ice calved from the Sawyer Glaciers in Tracy arm, Southeast Alaska, USA. Pacific Ocean.

Harbour Seal (Phoca vitulina) mother and pup on ice calved from the Sawyer Glaciers in Tracy Arm, Southeast Alaska, USA. Pacific Ocean.

Gull standing on icebergs calved from the LeConte Glacier just outside Petersburg, Southeast Alaska, USA. Pacific Ocean.

Icebergs calved from the LeConte Glacier just outside Petersburg, Southeast Alaska, USA. Pacific Ocean.

Harbor Seal (Phoca vitulina) hauled out on ice calved from the Sawyer Glacier in Tracy Arm, Southeast Alaska, USA.

A very unusual iceberg calved from the Sawyer Glacier in Tracy Arm in southeast Alaska, USA.

American Bald Eagle (Haliaeetus leucocephalus) resting on a calved iceberg from the Le Conte glacier just outside Petersburg in Southeast Alaska, USA. Pacific Ocean.

Adult harbor seals (Phoca vitulina) hauled out on ice calved from the Sawyer Glacier in Tracy Arm, Southeast Alaska, USA.

American Bald Eagle (Haliaeetus leucocephalus) taking flight from a calved iceberg from the Le Conte glacier just outside Petersburg in Southeast Alaska, USA. Pacific Ocean.

Detail of a very unusual iceberg calved from the Sawyer Glacier in Tracy Arm in southeast Alaska, USA.

Iceberg calved off Sawyer Glacier in Tracy Arm, Southeast Alaska, USA. Pacific Ocean.