Nan Madol:Nan Madol is an ancient city located on the island of Pohnpei. It consists of artificial islands made from basalt columns.
Micronesia:Micronesia refers to a region in the western Pacific Ocean consisting of thousands of small islands. It includes countries like Palau, Guam, and the Marshall Islands.
Coral Reefs: Coral reefs are underwater ecosystems formed by colonies of tiny animals called coral polyps. They are incredibly diverse and provide habitats for numerous marine species.