Island Survival

You don't do what the flight attendant tells you, and she's not happy. But she has to go back to her own seat so she leaves you alone. A few minutes later, the plane crashes into the water. The inside starts filling up with water, but because you're not strapped into your seat, you are able to swim out.

You get to the outside of the plane and you're floating in the ocean. You see an island off in the distance.

What do you do?