Bermuda Triangle, Indoor flume ride in Gold Coast, Queensland, Australia

Bermuda Triangle was an indoor flume ride at Sea World on the Gold Coast, built inside the show building of the former Lassiter's Lost Mine and reusing that ride's system. Boats passed animatronics and special effects whose sensors triggered movements and voices as each boat went below. Its theming, props and audio-animatronics were made by Alder Constructions, Sanderson Group and Showtronix.

Bermuda Triangle opened at Sea World on 31 March 1994, replacing Lassiter's Lost Mine, an indoor flume ride that had closed in April 1993. It was built for about A$3 million, against a Disney estimate of A$20 million, and reused the earlier ride's system. It closed in 2010 and was demolished from August 2012; Storm Coaster replaced it on 2 December 2013.

The ride's name and story drew on the Bermuda Triangle legend, with boats passing animatronics whose voices and movements were triggered by sensors below. Sponsors Pauls and Norco Co-operative were attached from opening on 31 March 1994, and the same concept opened as Das Bermuda Dreieck at Warner Bros. Movie World Germany on 30 June 1996, later renamed Bermuda Triangle: Alien Encounter.

The ride closed permanently in late 2010 and was demolished from August 2012, so there is nothing left to ride at Sea World; the boats were auctioned on 10 December 2012 at Village Roadshow Studios. The surviving version, Bermuda Triangle: Alien Encounter, operates at Movie Park Germany, rethemed as Area 51 - Top Secret in 2019.

Specialized sensors throughout the course trigger animatronic movements when boats pass beneath, creating precise timing for mechanical interactions.