WaterWorld attracts 400,000 visitors per year. The park first opened in 1989 and is generally open year-round, but is closed for a few days of the week during term time.Some of the park's most popular rides include: Black Hole, Nucleus, Space Bowl, Super Flume and Twister.NucleusThe ride Nucleus was the first indoor water-roller-coaster in the UK with 375 feet of ups and downs in a single raft.OwnershipIn 1999 Mo Chaudry's family trust bought Water World from Rank Leisure for £1.5m, at the time the park was operating at a loss. Early in the 21st century WaterWorld began turning profits and in 2009 is the only such attraction in the UK that is making money.