Gardner Soule (December 16, 1913 – October 26, 2000) was an American writer known for his books on cryptozoology and marine life.

Critics described his work on alleged cryptids like the Flathead Lake Monster as entertaining, not scientific.

[3] Other reviews were more positive, describing his research on marine creatures such as the giant squid, megamouth shark and sea wasp as informative.

Historian Ralph Bieber wrote that the book was "disorganized, full errors, and generally unreliable.

"[5] Orlan Sawey a President of the Texas Folklore Society wrote that a "major defect of the book is its historical inaccuracy.