The Meg (2018)

A group of scientists at an underwater research facility off the coast of China encounter a 75-foot-long prehistoric monster shark called a Megalodon. They enlist the help of Jonas Taylor, an experienced diver, to rescue their stranded crew members. As they track and poison the shark, they discover it is smaller and younger than the one they've been hunting. They face intense confrontations with the shark, resulting in sacrifices and deaths. Ultimately, they succeed in killing the shark and celebrate their victory, ensuring the safety of the oceans.