A melt pool that although has frozen over , has melted through to the ocean below.

Ice ridges, ice floes, and melt pools in late summer.

A vast expanse of interlocking melt pools.

Honeycomb pattern in subsurface ice is indicative of melting and deterioration of ice floe.

Stepping-stone appearance of a series of melt pools.

Radar view of ice cover

Sensor readout on bridge of CGC HEALY

A vast expanse of interlocking melt pools as seen on a foggy misty day.

Helicopter eye view of remains of an ice ridge as seen in late summer.

Random ice floes in a large polynya.

Ice floes, melt pools, and remants of ridges

An ice floe in a large polynya.

Ice floes

Fog and open water completely devoid of ice floes

Ice floes with brash ice in the intervening spaces.

Remants of a ridge showing relatively deep blue green ice below

Brash ice

Looking down to aquamarine colored ice with melt ponds breaking through to underlying seawater. Honecombed appearance of ice due to sub-surface melting.

Ice floes with remains of ridge. Ice to right significantly newer and thinner than floes to left.

Ice floes and melt ponds with surface frozen over

Dirty brash ice. Dirty appearance caused by algae being incorporated into ice.

Ice floes and melt pools

The random geometry of Arctic ice with interlocking newer thinner ice which melts quicker, older thicker ice with elliptical melt ponds, and leads seen in the distance.

Sensor display on the bridge of the CGC HEALY showing position as 79 49 N , 143 58 W.

A fracture extending through an area of 2nd to multi-year ice with elliptical melt ponds.

A fracture extending through an area of 2nd to multi-year ice with elliptical melt ponds.

A large melt pond in 2nd to multi-year ice.

In a polynya with a large floe to starboard.

Radarscope view of ice cover at 80 15 N 15206 W

A mirror-like surface on a melt pond with inclusions of brash ice.

Ice floes with melt ponds separated by a linear ridge extending to the horizon.

Ice floes and melt ponds in late summer.

Ice floes, melt ponds and a small lead in late summer.

Relative thick 2nd year to multi-year ice separated from newer thinner ice by a small ice ridge

Sensor display on the bridge of the CGC HEALY showing position as 80 58 N , 154 41 W.

A ridge broke by a lead in an area of elliptical melt ponds with another larger lead cutting diagonally across the image.

2nd year to multi-year hummocky ice with melt pond and ridges seemingly converging towards horizon.

Multi-year ice with a hummocky surface and melt ponds next to an aread of thinner newer ice witha smoother appearance.

An area of relatively new, thin floes some small ridges extending to the horizon .

An area of hummocky 2nd year to multi-year ice with melt ponds with a small polynya.

Melt ponds and ice floes

Ice forming over a melt pond that has melted through to the ocean below.

Ice forming over a melt pond

Ice floes, melt ponds, and some brash ice on a very gray dark Arctic day.

The bow of the CGC HEALY plowing through ice floes and melt pools. The ship is moving through the ice parallel to a long linear fracture in the ice

Ice floes and melt ponds on a gray day with a hint of sun illuminating fog and clouds to upper right.

Running along a fractured area between ice floes and melt ponds. Areas of open water appear as dark streaks in the distance.

Radarscope display of ice cover at 82 51 N, 161 22 W. This position is less than 500 miles from the North Pole.

Interlocking melt ponds and ice floes in late summer.

Helicopter eye view of ice floes, melt ponds, areas of brash ice, and other phenomena.