There are many different seas with different sizes, shapes, characteristics, and depths. The Caribbean Sea is the second-largest sea in the Atlantic Ocean and the world’s deepest, with a maximum depth of 7,686 meters below sea level. It is the world’s fifth-deepest body of water and is deeper than one of the oceans (Arctic Ocean). The Cayman Trough, which lies between Jamaica and the Cayman Islands, is the deepest point in the sea. At 5,016 meters below sea level, the South China Sea is the second-deepest sea.
At 4,097 meters, the Bering Sea, located between the Americas and Eurasia, is the eighth-deepest water body and the third-deepest sea. With a maximum depth of 3,787 meters, the Gulf of Mexico completes the list of the ten deepest oceans and seas. The Yucatán Channel separates the Gulf from the Caribbean Sea.
The 5 Deepest Seas
| Rank | Ocean | Maximum depth (m) | Average depth (m) |
| 1 | Caribbean Sea | 7,686 | 2,200 |
| 2 | Mediterranean Sea | 5,267 | 1,500 |
| 3 | South China Sea | 5,016 | 1,024 |
| 4 | Bering Sea | 4,097 | 1,640 |
| 5 | Gulf of Mexico | 3,787 | 1,585 |