Beluga whales are often seen in the Arctic Ocean.

The harbour porpoise is a small dolphin, with a body length of about 1.5 meters.

This is my first question.

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.

The vaquita is an endangered species and one of the rarest dolphins in the world.