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.

The name "Tokay" comes from the fact that it cries "Tokay. There is a legend that if you hear this cry seven times in a row, you will be happy.

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.

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.

Common bottlenose dolphin and Pacific white-sided dolphin are mammals, alligator snapping turtle are reptiles, and Sand tiger shark are fish.