The ship sailed through the high sea.

The harp seal is a marine mammal found in the Arctic Ocean.

The Arabian Sea is a region of the northern Indian Ocean bounded on the northeast and east by the Indian Peninsula, on the west by the Arabian Peninsula, and on the southeast by the Somali Peninsula.

I love going to the seaside resort during the summer.

The common seal is a species of seal found in coastal waters of the northern hemisphere.

The old seadog regaled us with tales of his adventures on the high seas.

The old sailor was known as a sea dog.

The Sea of Azov is a popular tourist destination in Russia.

The old sailor was known as a sea-dog.

The sea-lion gracefully swam through the water.