The sea contains several dozen islands, many of which contain well-preserved mammoth remains.

The seas around it contain coral, fish and reef.

The sea contains significant resources of petroleum and natural gas under its shelf, such as the Amauligak field.

The polar seas contain a huge biome with many organisms.

"Did you know, sir," he asked, smiling, "that the sea contained such riches?"

Scotland's seas are among the most biologically productive in the world and contain 40,000 or more species.

They say the sea is cold, but the sea contains the hottest blood of all, and the wildest, the most urgent.

The answer, of course, was that Pandora's planet-wide sea contained perils beyond those they knew.

The sea contains many sources of noise that interfere with the desired target echo or signature.

I think it's a lot more likely that the sea contains sewage than sewerage.