Kaito is my best friend.

He threw the sea anchor to stabilize the ship.

I have been to Wuhai city.

Chenghai District is a part of Shantou City in Guangdong Province.

The ancient murrelet is a small seabird that lives in the North Pacific.

During the era of haijin, interactions with foreign countries were strictly limited.

The common murre lives in the oceans of the Northern Hemisphere.

The White Sea is a sea located in the northern part of Russia.

Mr. Kaiboku is my best friend.

He learned about the naval battle in an old history book.