Below is a table with the seas of the so-called Southern Ocean, which includes their names, area (in thousands of square kilometers), average and greatest depth (in meters), as well as the main ocean of which they are part.
| number | Name of the sea | Average depth, m | Maximum depth, m | main ocean | |
| 1 | The Amundsen Sea | 98 | 286 | 585 | Quiet |
| 2 | Bellingshausen’s Sea | 487 | 2650 | 4470 | Quiet |
| 3 | Davis Sea | 21 | 571 | 1369 | Indian |
| 4 | The sea of Durville | 315 | 500 | 3610 | Quiet |
| 5 | Sea of Astronauts | 699 | 1900 | 4798 | Indian |
| 6 | The sea of Lazarev | 335 | 3000 | 4500 | Atlantic |
| 7 | Mawson’s Sea | 333 | 350 | 1000 | Indian |
| 8 | Sea of Rieser-Larsen | 1138,3 | 1800 | 3657 | Indian |
| 9 | Ross Sea | 439 | 677 | 2972 | Quiet |
| 10 | The sea of Scotia | 1300 | 3096 | 6022 | Atlantic |
| 11 | Sea of the Commonwealth | 258 | 500 | 3000 | Indian |
| 12 | The Somov Sea | 1150 | 1400 | 3000 | Quiet |
| 13 | The Weddell Sea | 2920 | 3000 | 6820 | Atlantic |
South ocean – conditional “fifth ocean”; is a collection of the southern parts of the Atlantic, Pacific and Indian oceans that surround the mainland.