2 Hidden Achievements
There are two hidden achievements in the game. The first is the eel bop. Some levels have a moray eel that sticks out of cracks in the rock. If you click on him he goes away, but not before he spits out coins.
The second is a little angler fish that hides in some rocks. If you click on him, he swims off but kind of poops out coins as he swims away.
Both unlock hidden achievements as well.
We have more cheats and tips for this game here, Fish vs. Crabs cheats
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