How would I survive?

How I would survive stranded on an island...

I wake up not remembering anything I am all alone and on an island. My clothes are half ripped. I stand up moving and looking around the island.

The first thing I see is a coconut tree which I feel in luck. I try climbing up the coconut tree but I can't it's too difficult! I run around looking for a rock. Finally I find a rock sitting among the sand, I pick it up and walk towards the coconut tree. I throw the rock as hard and fast as possible. Then a coconut drops to the ground then another and another and all of them fall down but sadly there is only three so I don't think I would survive with only three.

I try to find a way to open one coconut but it is to impossible so I put the coconuts down one by one. I go for a swim in the big ocean. I swim around and I find a broken ship, I come up for air, then go back down again. I go on to the ship and find a box. When I open it I find a knife and lighter I swim back up with the box. I go back to the island. I threw away the lighter because I didn't think I would need it. I get out the knife and start opening the coconuts.

A few moments later it starts getting darker. Then I remember that I had a lighter I try my hardest to look for the lighter then all of a sudden I remembered that I threw it away. I find some wood and start rubbing it together and start up a fire.I 'm shivering and put my hands above the fire and start heating up. I am now really warm. I try to build a shelter with some wood and rocks but it doesn't really turn out very well so I just lay out a few wood and lay on top.

I fall asleep, 24 hours later its morning and I'm hungry. I search around for something I could eat, I couldn't find anything. I hear something splashing in the water it is a baby shark. When I first saw it I was scared until I realised that it was only a baby shark.I  look closer and it swims towards me, behind my back I have a knife and rock. The shark is 2cm away from me I throw the rock and it jumps to me and I try to stab it with my eyes closed.Its dead I drag it into shore and I but it open and grab out some meat.I rinse it out on the water and I put it on top of the fire from earlier.Then I feel that it's ready so I try eat it but I was to nervous so I take one bite.Then once I finished it all I find a stick and write S.O.S.I plane flies pass and sees my sign they trow down a ladder and I climb up, and now I'm finally in the plane.The people on the plane gave me a blanket and a coffee am saved.