Also called Umi no Tamagotchi in Japan. This is supposed to be the hardest tamagotchi to raise because it requires a lot of attention especially in the baby stage. This tamagotchi uses the sound sensor first introduced by the Angelgotchi. The owner of the ocean tama has to tap the case or make a loud noise when a polar bear tries to attack the little fish. A unique feature of this tamagotchi is the water quality meter. It is displayed in the health meter as four skulls. The more skulls that are filled, the murkier the water is. If all four skulls are filled the water becomes black and the screen has to be flushed using the toilet icon. (This icon is usually used for cleaning up poop.)