The study of the continental shelf is an important field in oceanography.

I want to travel to that continent someday.

He is an expert in oceanography.

He is working in the field of science.

The continental shelf plays an important role as a habitat for marine life.

Health is very important.

His opinion is very important.

We learned about the protection of the main sea.

I am very interested in marine biology.

He is researching about a new energy source.