my ideas 1 add more animals such as turtles and seagulls and more types of fish 2 some kind of reinforcement so the shark does not break the ground 3 that when it is day finds to put under the roof not to sunbathe 4 rain night storms and tornadoes 5 mini boats and island to be able to use as base the initial raft 6 fish traps Harpoons 7 cold and hot