When a sacred jungle idol is violated, the curse of a shark god follows a group of people. After a sea captain (Trevor Bardette) removes black pearls from a sacred native shrine, the curse of the shark god falls upon him and anyone else with whom he comes in contact with, according to the native legend. Disaster strikes everyone in the cast, except for the one person who will survive the curse. Based on the Herman Melville Novel.
You can stream Omoo-Omoo the Shark God (1949) free and legally on OldReel, via the Internet Archive.
Yes — it is in the public domain and can be watched and shared freely.