Deep Blue Sea 3 is a 2020 American science fiction natural horror film, starring Tania Raymonde. Dr. Emma Collins and her team are on Little Happy Island studying the effect of climate change on great white sharks who come to the nearby nursery every year to give birth, their peaceful life is disrupted when a "scientific" team shows up looking for three bull sharks. It is the third and final installment of the Deep Blue Sea film series, and a direct sequel to Deep Blue Sea 2.

Plot

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, a bull shark who was responsible for the chaos in the past years, 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.