On a turn, you move one of your fish two spaces or two of your fish one space each. Fish can move orthogonally, and you must resolve the action of a space before taking your second move. Move into a space with plankton, and your fish grows in size; land on a birth space, and you add a little fish from your reserve to the board. The shipwreck serves as a tunnel for small fish, and the "?" space makes you draw a tile, take its action, then discard it. You might rotate part of the board, put a fisherman to work, or have an unexpected birth. Race to eat five fish first!