In order to survive in this ever-changing world, it is necessary to constantly continue learning new knowledge.

You can see drift ice in the Sea of Okhotsk in winter.

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.

The Calopteryx cornelia is a species endemic to Japan, and it has beautiful wings.

He was always envious of others' success, saying that the grass is always greener on the other side.

He is doing special exercises to strengthen his flexor digitorum profundus.

The olive ridley sea turtle is one of the smallest sea turtles in the world.

The flatback sea turtle is a species endemic to Australia and is on the brink of extinction.