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.

Tania Raymonde Helen Katz is an American actress. Her roles have included Cynthia Sanders on the Fox sitcom Malcolm in the Middle between 2000 and 2002, followed by the Alex Rousseau in the ABC series Lost from 2006 to 2010. She has appeared on MTV's Death Valley (2011), in the horror film Texas Chainsaw 3D (2013), and in the title role of the TV movie Jodi Arias: Dirty Little Secret (2013). In April 2015, she joined the cast of the TNT series The Last Ship. From 2016 to 2021, she starred in the Amazon Prime Video series Goliath.