Sea cucumbers are echinoderms that live on the ocean floor.

The sea fog rolled in, obscuring the view of the coastline.

The walls of the room were painted in a beautiful sea green color.

The scientists conducted experiments in the sea lab.

After spending months at sea, he developed his sea legs and could walk steadily on the deck even in rough waters.

The sea lion gracefully swam through the water.

I swam for a sea mile.

The sea mist rolled in, obscuring the view of the coastline.

The sea otter is a marine mammal found in the northern Pacific Ocean, known for its valuable fur.

The country's sea power is crucial for its national security.