Indra Island

Indra Island is a lone Second Sea island that exists for one fight: rip_indra. The wiki places it about 2,500 meters away from Forgotten Island, between Forgotten Island and Port Town in the island order, with a level listed as 1500. rip_indra is its only inhabitant. You cannot simply sail to it as you would to a normal island. To get there the normal way, talk to King Red Head in the Colosseum of the Second Sea, who teleports you to the island. The island has no official name, so the community chose one. Later you can talk to Erin in the Castle on the Sea to watch the battle cutscene from Indra Island again. As of Update 20, that cutscene also makes the island appear inside Sea Danger Level 4 as rocks, even though it sits roughly 1,940 meters from Tiki Outpost, and only the player who started the cutscene can see it. Like the Remote Island and Cave Island, it is not treated as a real island, so a flying boat such as the Miracle can land on the ground itself.