Hummocky multi-year ice with smoother first-year ice floes in the foreground.

Aquamarine melt ponds in multi-year ice.

Hummocky multi-year ice.

Aquamarine melt ponds in multi-year ice.

Hummocky multi-year ice with melt ponds interspersed with smoother first year ice.

Small first- to second-year adjacent to area of multi-year floes with aquamarine melt ponds.

A large melt pool that has been completely melted looking down into the underlying ocean water.

Refreezing melt pond in multi-year ice.

Refreezing melt ponds in multi-year ice.

Large area of open water with ice pack in the distance

Hummocky multi-year ice with an area of open water. Remnants of ridge in foreground.

Aquamarine melt pond freezing over

Area of multi-year ice with melt ponds refreezing.

Refreezing melt pond in multi-year ice.

Area of multi-year ice with melt ponds refreezing.

Area of multi-year ice with melt ponds refreezing.

Area of first year relatively smooth ice adjacent to multi-year ice with melt ponds refreezing.

A block of ice seen through the water.

Area of multi-year ice with melt ponds refreezing.

Area of multi-year ice with melt ponds refreezing.

Area of multi-year ice with melt ponds refreezing. Small floes of first-year ice with smoother appearance in middle of image.

Area of multi-year ice with melt ponds refreezing.

Area of multi-year ice with melt ponds refreezing.

Open water with ice floes in late summer.

Ice floes in multi-year ice in late summer.

Ice floes in multi-year ice in late summer.

Remains of a fracture through first-year ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Relatively smooth ice floes in first-year ice.

Relatively smooth ice floes in first-year ice.

Relatively smooth ice floes in first-year ice.

Open water and first-year ice floes.

Ice floe in open water.

Ice floe with remnant of ridge in open water

Ice floes with remnant of ridge

Looking down onto the edge of a melting ice floe. Note honeycomb pattern in underlying ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Refreezing melt ponds in multi-year ice.

Hummocky multi-year ice.

Relatively smooth first-year ice floes.

Refreezing melt ponds in multi-year ice with long serpentine lead.

A fracture in multi-year ice.

By late August refreezing has begun. A melt pond refreezing with an array of ice crystals on the surface.

Classic view of multi-year ice with refreezing melt-ponds. New ice broken into polygons in foreground.

In open water looking towards multi-year ice floes.