As her world is shrouded in darkness, a young girl must overcome her fears and travel to a mysterious city of light, save her father from a dangerous scientist and prevent the destruction of her planet.

Dr. Eric Vornoff, with the help of his mute assistant Lobo, captures twelve men for a grisly experiment; His goal to turn them into supermen using atomic energy. Reporter Janet Lawton, fiancée of the local lieutenant, vows to investigate Vornoff's supposedly haunted house.

A merman boy and mermaid girl play, explore a sunken ship, and deal with a giant octopus.

Race car driver Alan Colby and his new wife Denise are involved in a car crash where he sustains a serious head injury, causing him to have murderous feelings toward Denise. After Denise persuades him to honeymoon with her on the Cote D'Azur in France, they enlist the aid of a French psychiatrist who offers to regress Alan back to the time of the accident and cure him.

Several people disappear from and at the sea. Their bodies are found gnawed to the skeleton, even the marrow is missing. The scientists have no idea which animal could do such things. Dr. Turner begins to suspect that the company which builds a tunnel beneath the bay might have poisoned the environment and caused an octopus to mutate to giant dimensions...

To win the right to marry his love, the beautiful princess Andromeda, and fulfil his destiny, half-God-half-mortal Perseus must complete various tasks including taming Pegasus, capturing Medusa's head and battling the feared Kraken.

Sea life in a whole new way. Deep Sea 3D, an underwater adventure from the filmmakers behind the successful IMAX® 3D film Into the Deep, transports audiences deep below the ocean surface. Through the magic of IMAX®; and IMAX 3D, moviegoers will swim with some of the planets most unique, dangerous and colorful creatures, and understand this inspiring underworld.

A sailor falls in love with a carnival-girl, despite warnings that she is a "jinx" who has brought about the deaths of two previous suitors.

Silver Mask and Gold Mask and their gang of animal themed henchmen are after a magic sword entrusted to a little boy.

Searching for the lost world of Atlantis, Prof. Aitken, his son Charles and Greg Collinson are betrayed by the crew of their expedition's ship, attracted by the fabulous treasures of Atlantis. The diving bell disabled, a deep sea monster attacks the boat. They are all dragged to the bottom of the sea where they meet the inhabitants of the lost continent, an advanced alien race that makes sailors their slaves.

The California coast is terrorized by two enormous prehistoric sea creatures as they battle each other for supremacy of the sea.

The U.S. Navy's special group "Blue Water" builds a half-shark, half-octopus for combat. But the sharktopus escapes and terrorizes the beaches of Puerto Vallarta.