Kō represents the first of the ten Heavenly Stems.

Crustaceans are a type of marine life, including crabs and shrimp.

What is this organism?

I often go to the sea on weekends.

Umi is my best friend.

The sea breeze feels comfortable.

He found the sea on an old map.

He found the sea on an old map.

I love swimming at the seashore.

I saw a magpie-goose for the first time in the park.