| Answer | Crossword Clue |
|---|---|
| TOMBOLOS | Island-to-mainland sandbars |
| tombolo | a sandbar connecting an island to the mainland |
| tombolos | TOMBOLO, a sandbar connecting an island to the mainland |
| ATTU | Alaskan island closer to Russia than to the Alaskan mainland |
| EUBOEA | Greek island believed to have been separated from the mainland by an earthquake |
| barrier | A long narrow island lying parallel and close to the mainland, protecting the mainland from erosion and storms |
| barriers | A long narrow island lying parallel and close to the mainland, protecting the mainland from erosion and storms |
