He was standing on the seashore, staring at the distant horizon.

He gained sailing experience in the Arabian Sea.

When summer vacation comes, I go to the sea every day wearing swim trunks.

I have visited the Coral Sea.

Kaito is my best friend.

There is a beautiful pomegranate tree in my garden.

He threw the sea anchor to stabilize the ship.

He is receiving a basic living stipend.

Phytobenthos is an important part of the marine ecosystem.

The ecosystem of zoobenthos is an important field of study in marine biology.