| 100% | CHARYBDIS | 9 | Sea creature who lived across the Strait of Messina from Scylla |
| 44% | CHARYBDIS | 9 | Sea monster in Greek mythology that lived opposite Scylla in the Strait of Messina |
| 40% | LABRADOR | 8 | It's across the Strait of Belle Isle from Newfoundland |
| 36% | ERITREAN | 8 | African who lives along the coast of the Red Sea |
| 36% | OMANI | 5 | One who may live by the Strait of Hormuz |
| 35% | ORCA | 4 | Sea creature whose genus name comes from the Latin for “of the kingdom of the dead” |
| 34% | SCYLLA | 6 | Monster in the Strait of Messina |
| 34% | MENAI | 5 | — Strait, channel of the Irish Sea that separates the Welsh mainland from Anglesey |
| 33% | MISHIMA | 7 | Yukio —, author of 1963 novel The Sailor Who Fell from Grace with the Sea |
| 33% | SUMATRAN | 8 | Dweller across the strait from Singapore |
| 33% | SUMATRA | 7 | Island across the strait from Singapore |
| 32% | SUMATRA | 7 | It's across the strait from Singapore |
| 31% | BURKE | 5 | Robert O'Hara —, leader of the first expedition across Australia from south to north who died in 1861 |
| 31% | SINEADOCONNOR | 13 | Singer who got banned from "Saturday Night Live" for ripping up a picture of the pope: 2 wds. |
| 31% | DOLPHIN | 7 | Sea creature pictured on the flag of Anguilla |
| 31% | ANEMONES | 8 | Sea creatures resembling flowers of the same name |
| 31% | VAMPIRE | 7 | Creature who might disagree with the saying at the ends of 17-, 22-, 48- and 56-Across |
| 31% | OFOMAN | 6 | Gulf __, strait of the Arabian Sea |
| 30% | BURKE | 5 | Robert O'Hara —, Irish soldier, leader of the first expedition across Australia from south to north, who died in 1861 |
| 30% | YEMEN | 5 | Country across the Red Sea from Eritrea |
| 30% | SANA | 4 | Capital across the Red Sea from Asmara |
| 30% | ERITREA | 7 | Nation across the Red Sea from Yemen |
| 30% | OMAN | 4 | Country across the Arabian Sea from Mumbai |
| 30% | WESTEROS | 8 | Fictional continent across the Narrow Sea from Essos |
| 30% | ERITREA | 7 | It's across the Red Sea from Yemen |
| 30% | SANA | 4 | Capital across the Red Sea from Asmara: var. |
| 30% | PEANUTGALLERY | 13 | Group of kids who were the live audience for 18-Across: 2 wds. |
| 30% | EWOK | 4 | One of a number of small creatures who live on the moon of Endor in the Star Wars film series |
| 29% | YEMEN | 5 | Nation across the Bab el-Mandeb Strait from Djibouti |
| 29% | ANNABEL | 7 | ___ Lee, who lived in a kingdom by the sea |