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Spirit Lake is unusually deep. No diver has ever managed to find the bottom. When Dr. Amelia Brooks disappears during a deep-water dive, her three daughters travel home. They find themselves unable to let go and become drawn into the mysteries of the lake.

The crew of an atomic submarine battle to save the world from global destruction.

Phaedra is a poor sponge diver on the lovely Greek isle of Hydra. While diving, she discovers an ancient brass and gold statue of a boy riding a dolphin, which is said to have the magical power to grant wishes. Her shiftless boyfriend wants to sell it to an unscrupulous art collector, but Phaedra wants to give it to anthropologist Jim Calder, who would return it to the Greek government.

A traumatized shark expert must battle her own fears to lead a thrill-seeking businessman on a dive into a dangerous section of water known as "Shark Alley."

Mariel is a veteran elite diver who has one last chance at the Olympic Games. However, when a terrible truth comes to light, Mariel faces her biggest personal question: Is winning her true dream?

A skilled commercial diver in Malta, Tara Salgaonkar is a mystery to everyone around her. A strong girl who defies social conventions, she is trying to come to terms with her dark past.

After a group of biologists discovers a huge network of unexplored caves in Romania and, believing it to be an undisturbed eco-system that has produced a new species, they hire the best American team of underwater cave explorers in the world. While exploring deeper into the underwater caves, a rockslide blocks their exit, and they soon discover a larger carnivorous creature has added them to its food chain.

Terrifying footage of real life shark encounters is analyzed by experts with hopes of gaining new understanding of how sharks interact with humans.

Little coastal town is being terrorized by deadly Barracudas.

A fascinating pictorial document: On an old, cluttered work ship, a man is helped on with a bulky, old fashioned diving suit. It's a complicated process, many layers and sections are carefully applied. He goes over the side. Some men row out to what looks like a wrecked barge and set dynamite. Then the diver returns and now laughs and acknowledges the camera. The other men, now safely away, blow up the barge.