Ariel’s Playground Attraction in Mermaid Lagoon at Tokyo DisneySea; opened on September 4, 2001. It consists of Fishermen’s Nets, Kelp Forest, Galleon Graveyard, Ariel’s Grotto, Cave of Shadows, Sea Dragon, Ursula’s Dungeon, Starfish Playpen, and Mermaid Sea Spray. The playground is a fun-filled area created especially for children, where they can climb, crawl, interact, and explore in many colorful settings that feature locations and characters from The Little Mermaid.