Cocoa Island is a remote island in Sonic's World. The island was discovered Tails while in his Sea Fox he and used it for a little vacation time. While on the island Tails built a workshop and had T-Pup to keep him company. One day when Tails was resting he was awakened by a noise and saw the Battle Bird Armada bombing and burning Poloy Forest to set up their operation and look for the Chaos Emeralds. Tails took action and fought the Armada. (TA)
- Cocoa Island is the setting for the Game Gear game Tails Adventure, of which its debut story arc is based. The island has also been known as Kokko Island in some media.