Jonathan Bird's Blue World - Season 4 Season 8 Episode 13 Darkness All Around + Hole In The Wall Cave

This episode celebrating diving in the dark features the Blue World team exploring an ocean cave in Belize known as Winter Wonderland, where all the formations are covered in a snow-like coating of light sand. Then they explore the reefs of Belize at night. Finally, they visit a cave called Hole in the Wall, located in a pond in Florida and accessible only by boat.