Making an Island

20 year old Nathan was out sailing alone on the open ocean when suddenly a storm hits, as he struggles to wresstle his boat he is rendered unconsious. He suddenly awakes coffing up water noticing his boat is slowly sinking and is beyond saving, now stranded in the middle of the ocean without knowing where he is. There is no land in sight apart from a small rock in the distance sticking out of the water, he has no choice but to swim to it atleast preventing him from drowing. As he flops on the rocks breathing heavily, he found something he didn't expect, a Seed to make an Island.