In the old days, people thought of whales as mysterious beings.

The beluga whale is a beautiful creature that lives in the Arctic Ocean.

He treats us as a big friend.

The great auk is a species of bird that has become extinct.

He is an expert in oceanography.

My major is oceanography.

Marine pollution is a global issue, and all countries should cooperate to find a solution.

I have eaten whale meat before.

Male and female whales live in the deep parts of the sea.

The baleen whale, also known as the giant of the sea, astonishes people with its size and beauty.