Gentoo penguins are the fastest swimmers among penguins. The average speed of king penguins is about 8 km/h.

It looks like it has bones in it, but it is made of hard feathers.

Penguins live only in the Southern Hemisphere. Penguins are thought to be found only in cold areas, but they also live in warm areas.

They can be seen in the waters of Noboribetsu and Muroran during the warmer months of June through August.
They come to the waters of Hokkaido during the period when they are mating.

It is sometimes mistaken for a Dall's porpoise, but it is actually a Pacific white-sided dolphin, with a dorsal fin that resembles the blade of a sickle.