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

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

There are beautiful camellias blooming in my garden.

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.

My grandfather often used to sing 'Umi Yukaba'.

He is serving in the navy as a lieutenant.

The admiral devised a strategy and commanded the fleet.

He is working in the navy as a petty officer.