Movie where woman fights man underwater and she cuts him with keys

A young reporter and his niece discover a beautiful and enchanting creature they believe to be the real little mermaid.

This colorful adventure tells the story of an impetuous mermaid princess named Ariel who falls in love with the very human Prince Eric and puts everything on the line for the chance to be with him. Memorable songs and characters -- including the villainous sea witch Ursula.

Using a blue tint to set the scene under the sea, this is a short, surprisingly violent film where two divers fight to the death with axes over some treasure beneath the waves.

A young twenty-something diver living in the Florida Keys discovers he has the power to breathe underwater.

In this high-seas adventure, a woman creates a great rift between old friends: an experienced older diver, and his younger protege. They become enemies when a gold-digger marries the latter. She soon leaves him in favor of a wealthy yachtsman. She is aboard his boat when an accident occurs. The two divers must salvage the costly boat before it sinks.

A young twenty-something diver living in the Florida Keys discovers he has the power to breathe underwater.

In the future, laws skyrocket. Without room, the government deports convicts into the ocean. Armed only with makeshift bikinis and weapons, some surviving immigrants struggle to keep oxygen deprived cannibals out of a cavern dubbed Babylon.

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

A young woman, guilt ridden for a crime she committed but got free of, is captured by a sadist for a game of Russian roulette with a great white shark and five similar opportunists who have escaped the law.

Divers searching for sunken treasure witness the murder of drug dealers by modern-day pirates, but a killer great white is determined not to let any of them escape its waters.