A good memory is what you will need while diving into the virtual ocean of the Ocean Memory Challenge game. You will find a lot of interesting things in the underwater world, but the main interest for you will be the dark square tiles. When you click on any of them, you will find on the other side a nice picture depicting fish, algae and other marine life. You must find a second same picture for both to be deleted. This will clear the board of all tiles in the Ocean Memory Challenge. The time is unlimited, but the timer will run and the number of moves will also be counted.