| 2026-09-05 | Annular reefs |
| 2026-07-20 | Bikini and others |
| 2023-01-08 | Islands that form atop underwater volcanoes |
| 2022-09-11 | Spots for snorkeling |
| 2021-08-21 | Key rings? |
| 2021-03-04 | Lagoon encirclers |
| 2020-02-18 | Coral rings |
| 2019-01-22 | Ring-shaped islands |
| 2017-12-26 | Islands surrounding lagoons |
| 2011-09-24 | Much of Micronesia |
| 2011-01-05 | Coral islands |
| 2009-08-16 | Snorkeling sites |
| 2009-04-26 | Coral Sea features |
| 2008-01-31 | Ocean rings |
| 2005-12-04 | Many of the Marshall Islands |
| 2005-11-07 | Lagoons' surroundings |
| 2004-04-09 | A lot of Oceania |
| 2001-07-01 | A lot of Polynesia |
| 2001-06-16 | The Maldives, e.g. |
| 1998-11-09 | Many of the Marshall Islands |
| 1998-06-21 | Key rings? |
| 1998-05-25 | The Marshall Islands, e.g. |
| 1996-08-04 | A lot of Micronesia |
| 1994-01-15 | Part of the Ralik Chain |