I remember this scene where they were feeding some sharks in a tank with a piece of meat tied to a rope. The rope accidentally gets caught around this guy’s leg without him noticing and he gets dragged into the tank. The tank is one where they have the glass window for guests to watch the sharks underwater, so all the guests scream as this guy is devoured.
Deep Blue Sea? https://en.wikipedia.org/wiki/Deep_Blue_Sea_(1999_film)
Shark Attack 2 (2000)