They can stay underwater for 7 to 8 minutes.

Seals can be seen year-round at Cape Erimo in Hokkaido.
From May to June, you can see a mother and her pups after they have given birth.

Dolphins are classified as smaller than 4 meters in length, while whales are classified as larger.
However, there are exceptions and there is no clear standard.

Starfish digest their food by putting their stomachs outside their bodies. This allows them to eat food beyond small crevices and even large pieces of food.

There is one at the tip of each of its five arms. Some starfish have more than five arms, but this is very rare.