I love swimming at the seashore.

I often go to the sea on weekends.

Harunagiko is my best friend.

The sea otter is a rare animal, and its ecology is not well known.

The sea otter is a very rare animal.

A sea otter is a very cute animal that lives in the sea.

In the old days, people were moved by the strength and beauty of the sea lion.

A sea lion is a type of marine animal, and it is very rare.

I want to go to see the Yellow Sea.

I have been to Haikou.