They have sensory organs called "taste buds" that allow them to search for food. When they spread their whiskers wide, they are looking for food.

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

Hermit crabs that live on land have remnants from when they were in the water, and breathe through their gills and abdominal skin. They can only breathe in moist places.

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.

They stay still in the cold deep sea to conserve energy as much as possible.