According to Mary Louise Weller, the people working on the film had to deal with uncomfortably hot temperatures (115-125 degrees), lack of shade, lack of water, lack of electricity, and lack of screens to keep out swarming insects. There was only one small restaurant in the local area. People making the movie attempted to stay cool by sitting in the ocean.
A string of low budget horror movies starring Jose Ferrer that also includes Crash!, The Sentinel, Satan's Dog, Bloody Birthday, The Being.
Mary-Louise Weller said on a Cult Film Freak interview upon the question of acting in a monster movie: "It wasn't scripted to be about any monsters, but since it was actually blocked currency from numerous countries... Mexico, UK, Greece, USA... they used the movie as a way to move cash around. It was just amazing that it even cut together at all."
Is referred as both Bloodtide, one word, and Blood Tide, two words, the latter being the least used, although, in the actual opening credits, the title has two words.