In December 2009, a Gold Coast Bulletin article reported Sea World would be receiving a multimillion-dollar, water-related family attraction in 2010.

[4] In December 2017, a new splash zone expansion to Castaway Bay named The Reef was opened for the Summer school holiday season.

[5][6] Castaway Bay features attractions provided by Mack Rides and Prime Interactives, combined with theming by Sculpt Studios.

[10][11] The ride is an ideal family attraction despite the restriction that guests under 120 centimetres (3 ft 11 in) must be accompanied by an adult who is 14 years or older.

[8] Sky Fortress is a 5-storey adventure playground featuring a variety of rope bridges and tunnels.