Sunlight Tree Eve is a colossal tree that absorbs sunlight and transfers it to its roots that also supply air to the ocean floor through respiration.
It was first mentioned by Neptune when asked by Nami why the ocean floor was so brightly lit. He tells her that it is like the boss of the Yurukiman Mangrove at the Sabaody Archipelago, possibly meaning that it is their trunk. It is through this tree's roots that Fish-Man Island is able to have light 10,000 meters below the surface of the ocean.
- The name of this tree, alongside that of the Treasure Tree Adam, references "Adam" and "Eve" as the first two humans, man and woman respectively, in biblical and Koranic traditions. They were expelled from the Garden of Eden for eating the fruit of the Tree of Knowledge, comitting the Original Sin.