Pack ice, a combination of sea ice and pieces of icebergs, Weddell Sea

Pack ice, a combination of sea ice and pieces of icebergs, Weddell Sea.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Tabular iceberg, Antarctic Peninsula, near Paulet Island, sunset

Incredible tabular iceberg, Paulet Island, Antarctica.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

Tabular iceberg in the Antarctic Sound

Tabular iceberg in the Antarctic Sound.

Iceberg and mountain panorama, cloudy morning, Paradise Bay

Iceberg and mountain panorama, cloudy morning.

Tabular iceberg in the Antarctic Sound

Tabular iceberg in the Antarctic Sound.

Tabular iceberg.  The edge of a huge tabular iceberg.  Tabular icebergs can be dozens or hundreds of miles in size, have flat tops and sheer sides, Scotia Sea

Tabular iceberg. The edge of a huge tabular iceberg. Tabular icebergs can be dozens or hundreds of miles in size, have flat tops and sheer sides.

Iceberg detail, at sea among the South Orkney Islands, Coronation Island, Southern Ocean

Iceberg detail, at sea among the South Orkney Islands.

Iceberg detail, at sea among the South Orkney Islands, Coronation Island, Southern Ocean

Iceberg detail, at sea among the South Orkney Islands.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Adelie penguins leaping into the ocean from an iceberg, Pygoscelis adeliae, Brown Bluff

Adelie penguins leaping into the ocean from an iceberg.

A tiny Adelie penguin stands atop an iceberg, Pygoscelis adeliae, Paulet Island

A tiny Adelie penguin (Pygoscelis adeliae) stands atop an iceberg, Paulet Island, Antarctic Peninsula.

Iceberg, clouds and sky, Antarctica, Antarctic Sound

Iceberg, clouds and sky, Antarctica.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

A glacier fractures and cracks, as the leading of a glacier fractures and cracks as it reaches the ocean.  The pieces will float away to become icebergs, Neko Harbor

A glacier fractures and cracks, as the leading of a glacier fractures and cracks as it reaches the ocean. The pieces will float away to become icebergs.

The underwater edge of an iceberg, with a few Adelie penguins on it, Brown Bluff

The underwater edge of an iceberg, with a few Adelie penguins on it.

Iceberg with scalloped erosion.  The eroded indentations on this iceberg were melted when this portion of the iceberg was underwater.  As it melted, the iceberg grew topheavy, eventually flipping and exposing this interesting surface, Paulet Island

Iceberg with scalloped erosion. The eroded indentations on this iceberg were melted when this portion of the iceberg was underwater. As it melted, the iceberg grew topheavy, eventually flipping and exposing this interesting surface.

Antarctic icebergs, sculpted by ocean tides into fantastic shapes, Cierva Cove

Antarctic icebergs, sculpted by ocean tides into fantastic shapes.

Icicles and melting ice, hanging from the edge of an blue iceberg.  Is this the result of climate change and global warming?, Brown Bluff

Icicles and melting ice, hanging from the edge of an blue iceberg. Is this the result of climate change and global warming?

Iceberg, Antarctic Sound

Iceberg.

Small ice floe with penguins, with a large tabular iceberg in the distance, Antarctic Sound

Small ice floe with penguins, with a large tabular iceberg in the distance, Antarctic Sound.

Iceberg and snow-covered coastline, Antarctic Sound

Iceberg and snow-covered coastline, Antarctic Sound.

Iceberg with scalloped erosion.  The eroded indentations on this iceberg were melted when this portion of the iceberg was underwater.  As it melted, the iceberg grew topheavy, eventually flipping and exposing this interesting surface, Paulet Island

Iceberg with scalloped erosion. The eroded indentations on this iceberg were melted when this portion of the iceberg was underwater. As it melted, the iceberg grew topheavy, eventually flipping and exposing this interesting surface.

Blue iceberg detail, Paulet Island

Blue iceberg detail.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

A blue iceberg.  Blue icebergs are blue because the ice from which they are formed has been compressed under such enormous pressure that all gas (bubbles) have been squeezed out, leaving only solid water that takes on a deep blue color, Scotia Sea

A blue iceberg. Blue icebergs are blue because the ice from which they are formed has been compressed under such enormous pressure that all gas (bubbles) have been squeezed out, leaving only solid water that takes on a deep blue color.

Iceberg, Scotia Sea

Iceberg.

Coronation Island, is the largest of the South Orkney Islands, reaching 4,153' (1,266m) above sea level.  While it is largely covered by ice, Coronation Island also is home to some tundra habitat, and is inhabited by many seals, penguins and seabirds

Coronation Island, is the largest of the South Orkney Islands, reaching 4,153' (1,266m) above sea level. While it is largely covered by ice, Coronation Island also is home to some tundra habitat, and is inhabited by many seals, penguins and seabirds.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Iceberg, ocean, light and clouds.  Light plays over icebergs and the ocean near Coronation Island

Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Distant icebergs, mountains, clouds, ocean at dawn, in the South Shetland Islands, near Deception Island

Distant icebergs, mountains, clouds, ocean at dawn, in the South Shetland Islands, near Deception Island.

Zodiac cruising in Antarctica.  Tourists enjoy the pack ice and towering glaciers of Cierva Cove on the Antarctic Peninsula

Zodiac cruising in Antarctica. Tourists enjoy the pack ice and towering glaciers of Cierva Cove on the Antarctic Peninsula.

Iceberg, South Orkney Islands, Coronation Island, Southern Ocean

Iceberg, South Orkney Islands.

Iceberg panoramic photo.  Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island

Iceberg panoramic photo. Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Icebergs and ice near Paulet Island

Icebergs and ice near Paulet Island.

Iceberg detail near Paulet Island

Iceberg detail near Paulet Island.

Iceberg detail, scalloping created by melting ice while underwater, Antarctica, Paulet Island

Iceberg detail, scalloping created by melting ice while underwater, Antarctica.

Iceberg study near Paulet Island, Antarctica

Iceberg study near Paulet Island, Antarctica.

Iceberg above water and some of the underwater portion seen as well, Brown Bluff

Iceberg above water and some of the underwater portion seen as well.

Iceberg detail.  Cracks and melt patterns.  Blue ice, Brown Bluff

Iceberg detail. Cracks and melt patterns. Blue ice.

Iceberg panoramic photo.  Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island

Iceberg panoramic photo. Iceberg, ocean, light and clouds. Light plays over icebergs and the ocean near Coronation Island.

Icebergs floating in the ocean near Paulet Island

Icebergs floating in the ocean near Paulet Island.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

Icebergs and ice near Paulet Island

Icebergs and ice near Paulet Island.

Iceberg and mountain panorama, cloudy morning, Paradise Bay

Iceberg and mountain panorama, cloudy morning.

Icicles and melting ice, hanging from the edge of an blue iceberg.  Is this the result of climate change and global warming?, Brown Bluff

Icicles and melting ice, hanging from the edge of an blue iceberg. Is this the result of climate change and global warming?

Glacier and iceberg, Cumberland Bay, near Grytviken

Glacier and iceberg, Cumberland Bay, near Grytviken.

Iceberg and snow-covered coastline, Antarctic Sound

Iceberg and snow-covered coastline, Antarctic Sound.

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula.  This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean

Pack ice and brash ice fills the Weddell Sea, near the Antarctic Peninsula. This pack ice is a combination of broken pieces of icebergs, sea ice that has formed on the ocean.

Distant icebergs, mountains, clouds, ocean at dawn, in the South Shetland Islands, near Deception Island

Distant icebergs, mountains, clouds, ocean at dawn, in the South Shetland Islands, near Deception Island.

A glacier fractures and cracks, as the leading edge reaches the ocean.  The pieces will float away to become icebergs, Neko Harbor

A glacier fractures and cracks, as the leading edge reaches the ocean. The pieces will float away to become icebergs.