Watch Deep Blue Sea 3 (2020) online

Deep Blue Sea 3 is a 2020 science fiction natural horror film starring Tania Raymonde. It is the third and final installment of the Deep Blue Sea film series, and a direct sequel to Deep Blue Sea 2.
Dr. Emma Collins continues the work of her deceased father on the protection of Great White Sharks on an artificial island near South Africa named Little Happy. Her team includes Spinnaker (nicknamed "Spinn"), Miya, and Eugene Shaw, Emma's father's best friend and brother figure. Also living on Little Happy are Emma's friends Nandi and her brother Bahari. Bella (the bull shark main antagonist from the previous film) is found dead, having been killed after getting stuck in fishing lines, discovered by Dr. Richard Lowell and his team on their boat, the Thasos. They go to Little Happy to find the three last pups of Bella are now adults, and are the only survivors from the litter in the last movie.

Richard is revealed to be Emma's ex-boyfriend. When Richard and his team dive to chase the bull sharks, Emma goes with them and discovers three White Sharks devoured by the bull sharks. Soon after, Brown (a member of Richard's team) is found dead, having been sliced in half by the bull sharks. With Emma's help, one of the biggest bull sharks is sedated and captured but Richard is injured.

Later, Bahari goes fishing but is attacked and devoured by one of the two remaining bulls. Nandi later discovers his arm. After the loss of her friend, Emma confronts Richard. He reveals her that these bull sharks are more intelligent (explaining the events from the two previous films). He says that with the beacon which was attached to their mother, he can attract her offspring as they know that their mother is dead. He concludes in saying that if these sharks reproduce, it will be a catastrophe. Lucas, leader of the mercenaries of Genotic Labs, overthrows Richard's command and decides to kill everyone and flee with the captured shark. They place a mine to blow everything up, not knowing that Emma and her team is spying on them with an underwater drone.