Name	Known for
David Ackroyd Narrator (voice) Narrator (voice) See fewer	The Dark Secret of Harvest Home (1978)
Kihachiro Aratake Self - Scuba Divemaster Self - Scuba Divemaster See fewer	Expedition Unknown (2015)
Cecilia Hagland Self - Underwater Videographer (as 'C' Hagland) Self - Underwater Videographer (as 'C' Hagland) See fewer	History's Mysteries (1998)
Gary Hagland Self - Underwater Photographer Self - Underwater Photographer See fewer	History's Mysteries (1998)
Graham Hancock Self - Author Self - Author See fewer	Underworld: Flooded Kingdoms of the Ice Age (2002)
Tom Holden Self - Videographer Self - Videographer See fewer	Drop Zone: Fiji (2010)
Masaaki Kimura Self - University of the Ryukyus (as Dr. Masaaki Kimura) Self - University of the Ryukyus (as Dr. Masaaki Kimura) See fewer	Quest for the Lost Civilization (1998)
Robert Schoch Self - Author (as Dr. Robert Schoch) Self - Author (as Dr. Robert Schoch) See fewer	Riddle of the Sphinx: The Awakening (2021)
John Anthony West Self - Author Self - Author See fewer	Chanceyville (2003)