Hakugei (白鯨, White Whale) is a steel roller coaster at Nagashima Spa Land in Mie Prefecture, Japan.

It was originally a wooden roller coaster known as White Cyclone (ホワイトサイクロン, Howaito Saikuron) manufactured by Swiss company Intamin, and it operated from 1994 to 2018.

This roller coaster, Jupiter, opened in 1992—after the Japanese government relaxed height restrictions on wooden structures.

[6] The ride was particularly fast for a wooden roller coaster and featured many common elements such as helices, large drops and smaller bunny hills.

[3] The roller coaster had a double out-and-back track layout and used trains manufactured by the Philadelphia Toboggan Company.