Each turn, you will either play a fish or dive into your ocean. You will take 6 turns during each of the 4 weeks (a total of 24 turns per player during the entire game).
You will typically spend the beginning of the game playing low-cost fish cards and laying eggs, the middle of the game playing higher-cost fish cards and hatching eggs into young, and the end of the game playing powerful “WHEN PLAYED” fish cards and gathering young to form schools.