In the body of a massive fish, about 200 miles long, is an island around half that length. This island is made up of deposited minerals from the sea, including large amounts of ancient bones and shells. It specifically sits across the fishe's mouth, throat, and stomach. This space is around halfway filled with seawater, and has 5 exits: The jaws, which can open to the full extent of the cavity, the 2 gills, which are always open but only below the waterline, and the 2 spiracles high in the roof of the skull, providing light and air to the island. The jaws open hourly, which is the main way nutrient get to the island. The fish moves at a constant 50mph across all latitudes through thunniform motion
What effect would being in this fish have on the island's environment?