How the drone could restore sea ice

1 An underwater drone sails under ice floes in Arctic waters

-1.5C water

2 Drone detects thin ice above and rotates to punch a hole through the ice. Water is pumped to the surface

3 When the water hits the cold air it spreads over the ice sheet and freezes to create an extra thick layer of ice.

After re-icing, the drone returns to the charging hub and

then repeats the task

1 An underwater drone sails under ice floes in Arctic waters

2 Drone detects thin ice above and rotates to punch a hole through the ice. Water is pumped to the surface

3 When the water hits the cold air it spreads over the ice sheet and freezes to create an extra thick layer of ice

-1.5C water

After re-icing, the drone returns to the charging hub and then repeats

the task