The octopus has one brain in the center of its body and a small brain in each of its eight arms. By the way, there are three hearts.

Once a year, the old hair on the body of seals is replaced by new hair. This period is called the molt season. The molt period lasts approximately 2 to 3 weeks.

Black teeth may remind you of cavities, but in the case of fur seals, it is a sign of good health.
Black teeth are caused by the presence of good bacteria that produce black pigment in the mouth.
When they are born, their teeth are white, but as they age, they turn black.

About 95-97% of their body is made up of water.

Noboribetsu Marine Park Nixe opened on July 20, 1990.