SINK or SWIM

The unsinkable ship is going down. Swim for the island.
Climb icebergs to escape the sharks.

Move Arrow keys / WASD
Sprint Shift (uses stamina)
Jump / climb / hop off Space
Restart R   Mute M

Swimming tires you out. Rest on icebergs to get your stamina back, but the sharks will circle and wait for you. Hop off when the coast is clear.