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.

Na Kyung-soo, a diver, is angered to learn that the Coast Guard is assigning responsibility for the death of a fellow diver during the Sewol ferry disaster recovery to Ryu Chang-dae, the representative of civilian divers, and charging him with manslaughter.

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.

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 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."

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.

A married couple of abalone divers must confront ruthless investors taking over their coastline.

Yusuf works for a shipping company that salvages and sells sunken shipwrecks. His beautiful wife Meryem is a modest teacher who gives private lessons and is two months pregnant. The couple is unaware that their short trip to work on a sunken ship project off the coast of Bozcaada will turn into a nightmare because of a letter left by a woman they have never met. At the same time, Adem, a desperate soldier who has learned that his wife has run off with another man, is on the brink of madness, frantically calling his only friend on the island, the former diver Niko, for help. The sun sets, the sky splits, and when that hour comes, fate brings the partners together. One of the four whose lives intersect that night is destined to die. The hearts of the remaining three are filled with a hellish heat.

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.

A bitterly jealous sponge fisherman tries to sabotage a fellow diver.

A rag-tag team of divers attempting to salvage a sunken car from a river are thwarted by a highly aggressive bull shark.