It is the last island in the Paradise part of the Grand Line. Everyone wanting to enter the New World gathers here as they get ready for their journey. It is a massive mangrove forest growing out from the middle of the ocean with each tree of the forest serving as an "island" for which people live on. There are 79 mangrove trees that make up the island. Groves 1-29 are a lawless area where criminals hang out. From 30-79 there are many tourist attractions and it is completely civilized. A small marine branch is located on grove 66 to provide protection for the island from all the visiting criminals.

The home of the fishmen and merfolk. It serves as an underwater gateway to the New World for those who do not wish or are not legally permitted to cross over the Red Line above. It is also notoriously difficult to reach, with only 30% of the ships surviving the journey. It is encased in a giant bubble, allowing human visitors to breathe. This a very famous destination for people. The island is protected by the Yonkou Estelle Ridden.