This world is a customized generated world, the sea level is higher than the normal, so is reassembles a deep ocean. This is a spin-off of the normal island survival with more twists. There are some challenges if you want to complete them, i won't mind if you don't complete them, and I haven't given you any materials except for a tree, and some books to read, so this will be one heck of a journey for you folks. Well good luck ;D.
You are a survivor of a shipwreck. You are in the middle of the ocean that is very deep, and you have to survive with nothing but yourself.