Deep-sea fish have undergone various evolutions due to the harshness of their habitat.

This forest is a habitat for many kinds of animals.

Attention is being focused on the trends of large-capital stocks.

Driving a heavy vehicle requires special training.

I have eaten whale meat before.

Male and female whales live in the deep parts of the sea.

The baleen whale, also known as the giant of the sea, astonishes people with its size and beauty.

Cetus is one of the constellations in the southern hemisphere.

The gray whale lives in the North Pacific.

The 児童鯨 is a large whale that lives in the North Pacific.