This 21 October 2018 video says about itself:
In this episode of Blue World, Jonathan and Cameraman Bill are night diving with sharks in the Bahamas! And just for added fun, we are taking the Brave Wilderness team with us! It’s sharks after dark! And we witness a spectacular chase between a Lemon shark and a Southern Stingray.
JONATHAN BIRD’S BLUE WORLD is an Emmy Award-winning underwater science/adventure series featuring underwater cinematographer/naturalist Jonathan Bird.