| 100% | ISLEOF | 6 | & 15A Area of NE Kent formerly separated from the mainland by the Wantsum Channel |
| 68% | THANET | 6 | Isle of —, area of Kent formerly separated from the mainland by the Wantsum Channel |
| 41% | ARDS | 4 | — Peninsula, landform in Northern Ireland separated from mainland Scotland by the North Channel |
| 40% | NORTHMINCH | 10 | Channel separating Lewis and Harris from the mainland of Scotland |
| 38% | JURA | 4 | Island in the Inner Hebrides separated from the Scottish mainland by the Sound of — |
| 37% | MOZAMBIQUE | 10 | Namesake of the channel separating Madagascar from the African mainland |
| 37% | VANCOUVER | 9 | Island separated from the Canadian mainland by the Strait of Georgia and Queen Charlotte Sound |
| 35% | MENAI | 5 | — Strait, channel of the Irish Sea that separates the Welsh mainland from Anglesey |
| 34% | LAGOON | 6 | Body of water separated from the sea by a reef |
| 34% | BRAN | 4 | Husks of cereal grain separated from the flour by sifting |
| 34% | LAGOON | 6 | Body of water separated from the ocean by a reef |
| 32% | OLAND | 5 | Island in the Baltic Sea separated from mainland Sweden by Kalmar Sound |
| 32% | ALDERNEY | 8 | Island separated from the Cap de la Hague, France, by the Race of — |
| 31% | WEXFORD | 7 | County of SE Republic of Ireland separated from SW Wales by St George's Channel |
| 31% | EXCLAVE | 7 | Part of a country that's separated from its mainland and surrounded by different country |
| 30% | CHIOS | 5 | Greek island separated from Turkey by a strait of the same name |
| 30% | KAMCHATKA | 9 | — Peninsula, area of E Russia separating the Sea of Okhotsk from the Bering Sea and Pacific Ocean |
| 30% | KAMCHATKA | 9 | — Peninsula, area of eastern Russia separating the Sea of Okhotsk from the Bering Sea and Pacific Ocean |
| 29% | LEVANT | 6 | The —, name by which the area of the Mediterranean now occupied by Syria, Lebanon and Israel was formerly known |
| 28% | ART | 3 | "The method of levitation, in order to separate one's self from enslavement by the earth," per Anaïs Nin |
| 28% | ASIA | 4 | It's separated from North America by the Bering Strait |
| 28% | POLDERS | 7 | Areas of low-lying land reclaimed from the sea |
| 27% | CORE | 4 | Area of the body strengthened by planks |
| 26% | PEI | 3 | It's separated from N.B. by the Northumberland Strait |
| 26% | FOLDINHALF | 10 | Reduce the area of by 50% |
| 26% | DANELAW | 7 | Area of East England held by the Viking invaders |
| 26% | HERBERT | 7 | & 15A President of the US from 1929-33 |
| 26% | CALLUSES | 8 | Areas of thick skin on the hands from hard work |
| 26% | ALASKA | 6 | State separated from Asia by the Bering Strait |
| 26% | SRILANKA | 8 | Island separated from India by the Palk Strait |