Just like masses being overscared with sharks because of Jaws, its probably because another but much less popular movie “The Depth [1977]” with Nick Noltie where in a final scene Noltie wins underwater battle because he knows where huge Murena lives and put a villain head in there. Then we see that Murena litterally sicking him into her hole with a force that break his mask and break him in half. Definitely one of the most memorable scenes of the movie and definitely what made me start my doving adventure (now cerified with CMAS and PAID up to deep dive / rescue diver). Definitiely movie worth rewatching.
