At certain point in the "Be the Best Trainer!" quest, the player will receive notice from Finley of a strange-looking dolphin being spotted in the Cortica River's Upstream area. When the player dives and goes to the Twilight Temple area, they will notice that the dolphin doesn't seem to like their presence very much. One of the team members on the boat will suggest bringing a female dolphin partner along on the next dive to perhaps get the Amazon River Dolphin to be more relaxed and get used to the player's presence. This is because of legends that say that Amazon River dolphins turn into attractive men at night and attempt to woo women before returning to the water at dawn.