Submarine Film Corporation

Olive Granger, an heiress survives a shipwreck in the South Seas and is washed ashore an island along with international crooks Irene Carlton and Fred Morgan, who steal her credentials and escape to America, where Irene poses as Olive. Paul Patterson and Jan Boomer, divers, find Olive abandoned in a cave and fight through the jungle in competition for the girl. While diving for pearls, the treacherous Boomer dies in the clutching coils of a giant octopus. Olive and Paul arrive in New York, expose the impostors, and get married.

One of the earliest examples of underwater cinematography, this film explores the sea around The Bahamas in an expedition led by the Williamson Brothers, who shot undewater footage for the Thanshouser company. Among the scenes shown are a shark attack and a sawfish being caught.