Island reefs are home to some of the most amazing underwater sights. They are made by coral polyps and are key ... For shark lovers, reef hook diving is thrilling. Seeing over 10 manta rays ...

KIKAI, Kagoshima Prefecture—The coral reef terraces of Kikaijima island here have been recognized by the International Union of Geological Sciences as one of the 100 IUGS Geological Heritage Sites.

In the Southern Line Islands, Kiribati, I witnessed firsthand how a fully protected marine area enabled the reef’s recovery after a massive coral bleaching event in 2015-2016. When we returned ...