| 100% | MENAI | 5 | — Strait, channel of the Irish Sea that separates the Welsh mainland from Anglesey |
| 44% | MOZAMBIQUE | 10 | Namesake of the channel separating Madagascar from the African mainland |
| 42% | NORTHMINCH | 10 | Channel separating Lewis and Harris from the mainland of Scotland |
| 40% | SOUTHCHINA | 10 | — Sea, that arm of the Pacific Ocean separating Vietnam from the Philippines |
| 39% | VANCOUVER | 9 | Island separated from the Canadian mainland by the Strait of Georgia and Queen Charlotte Sound |
| 38% | THANET | 6 | Isle of —, area of Kent formerly separated from the mainland by the Wantsum Channel |
| 38% | ISLEOF | 6 | & 15A Area of NE Kent formerly separated from the mainland by the Wantsum Channel |
| 35% | TROPIC | 6 | ___ of Capricorn (line that passes through the Mozambique Channel and the Coral Sea) |
| 34% | BOSPORUS | 8 | Strait that connects the Black Sea with the Sea of Marmara |
| 34% | MESSINA | 7 | Strait of __ separates Sicily from mainland Italy |
| 34% | HORIZON | 7 | Line that appears to separate the sea from the sky |
| 33% | SAMOS | 5 | Island in the Aegean Sea separated from Turkey by the Mycale Strait |
| 33% | OLAND | 5 | Island in the Baltic Sea separated from mainland Sweden by Kalmar Sound |
| 33% | CHIOS | 5 | Greek island separated from Turkey by a strait of the same name |
| 33% | CHARYBDIS | 9 | Sea creature who lived across the Strait of Messina from Scylla |
| 33% | OKHOTSK | 7 | Sea of —, that part of the Pacific Ocean surrounded by the Kamchatka Peninsula, Sakhalin Island, Kuril Islands and Siberian mainland |
| 32% | JURA | 4 | Island in the Inner Hebrides separated from the Scottish mainland by the Sound of — |
| 32% | HBO | 3 | Channel name that was dropped from the name of streaming service Max |
| 32% | LAGOON | 6 | Body of water separated from the sea by a reef |
| 32% | CHARYBDIS | 9 | Sea monster in Greek mythology that lived opposite Scylla in the Strait of Messina |
| 32% | ABSOLUTELY | 10 | Channel 4 sketch series featuring the village of Stoneybridge that ran from 1989-93 |
| 31% | ADM | 3 | Infamous squatter community by the North Sea Canal on the west side of Amsterdam that lasted from 1997 until 2019 (abbr.) |
| 31% | KAMCHATKA | 9 | — Peninsula, area of E Russia separating the Sea of Okhotsk from the Bering Sea and Pacific Ocean |
| 31% | KAMCHATKA | 9 | — Peninsula, area of eastern Russia separating the Sea of Okhotsk from the Bering Sea and Pacific Ocean |
| 31% | ONETHIRD | 8 | *Portion of the Irish flag that's green |
| 31% | ARDS | 4 | — Peninsula, landform in Northern Ireland separated from mainland Scotland by the North Channel |
| 31% | CARIBBEAN | 9 | Sea that surrounds the island of Cuba |
| 31% | ARAL | 4 | — Sea, lake east of the Caspian Sea that straddles the boundary between Uzbekistan and Kazakhstan |
| 30% | ISLE | 4 | ___ of Man, island in the Irish Sea |
| 30% | BALTIC | 6 | ___ Sea that borders the north of Poland |