Lidia and her father, Pablo, return to the family lighthouse after her mother’s death. Pablo, aware of Lidia's fragile emotional balance, worries for a possible relapse after her suicide attempt. Lidia, annoyed by her father's lack of trust, will discover that something’s not right at the Lighthouse, and that danger awaits for them if they do not find out the truth.

When they're hired to recover the lost treasure of Columbus, married scuba divers Sebastian and Dani think they've hit the jackpot. But as they get closer to the fortune, the couple begins to suspect their employers have their own agenda. Hitting upon the real plan, the two come to the chilling realization that they may be expendable and that there's much more than riches at stake.

Grace Winter, a young woman on trial for murder, recounts the tale of how she survived a shipwreck at sea in a lifeboat that initially carried too many people.

Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.

Massachusetts, 1892. An unmarried woman of 32 and a social outcast, Lizzie lives a claustrophobic life under her father's cold and domineering control. When Bridget Sullivan, a young maid, comes to work for the family, Lizzie finds a sympathetic, kindred spirit, and a secret intimacy soon blossoms into a wicked plan.

After a judge passes away under suspicious circumstances, Kim Wheeler, an attorney who is appointed as a judge for Nevada's 5th district after the former judge's death, finds herself covering a circuit that stretches between Las Vegas and Reno — a rugged, often desolate area where anything and everything can happen. As the investigation into the death intensifies, Kim's sister Kris, who runs the local brothel, becomes the prime suspect.

A marine biologist, a dolphin trainer, a research scientist, and a local sheriff try to hunt down a large sea monster, a shark/octopus hybrid, that is devouring swimmers and fishermen off a south Florida coast.

A logger defends his family from a group of dangerous drug runners.

Great white sharks attack a fishing charter, ramming a hole in the ship’s hull. With the shoreline miles away, those aboard are forced to fight for their lives before they are either drowned or eaten alive.

Decades ago, the USSR developed unkillable sharks and launched them to the moon. Today, a team of American astronauts will endure the fight of their lives.

A hardened special forces agent fights to protect a young woman from a sinister criminal gang. At the same time, he feels a special connection to the young woman, like they have met in a different life.

A marine biologist and a government agent investigate mysterious deaths and rumors of a sea monster in a secluded ocean cove, and find themselves involved with a marine biology professor conducting secretive experiments, international spies trying to steal his secrets, a radioactive light on the sea bottom, and the malevolent thing which guards it.