The dolphin is 2.8 meters long and the Green anaconda is over 4 meters long.

Penguins are flightless birds, or avifauna. They used to fly in the past, but it is thought that they evolved and stopped flying. Instead, they became good at swimming & diving.

It is said that they cannot distinguish colors.

It is called nuptial color, which looks yellow or golden. This is how they show off their presence.

There are five species of wild seals that can be seen in Japan: bearded seal (Erignathus barbatus), ringed seal (Pusa hispida), spotted seal (Phoca largha), Harbor seal (Phoca vitulina), and ribbon seal (Histriophoca fasciata).
In Japan, these seals can basically only be seen in Hokkaido.