I am very interested in marine biology.

The study of benthos is an important field in marine biology.

According to the law on specified alien species, the import of certain organisms is prohibited.

The history of the Empire of Japan is very interesting.

The bull shark is known for its ability to live in freshwater.

The blue shark is beautifully blue in the sea.

The longfin mako shark is a very fast swimmer and lives in the deep sea.

The banded houndshark is a species of shark that lives in the seas of Japan.

The zebra bullhead shark is a type of shark that lives on the seafloor.

The Edo oil shark is a type of shark that lives in the deep sea.