I've played about 15 hours of endless ocean and explored about 90% of the areas. I've only found about 3/5 to 2/3 of the fish though so there is still alot to see and do. If the game looks interesting to you, then I'm sure you'll enjoy it. Its not too great right at the beginning because the shallow parts you start in aren't too exciting. But the more you play the more captivating it becomes.