"Cocoon" is a 1985 American science-fiction fantasy comedy-drama film directed by Ron Howard about a group of elderly people rejuvenated by aliens. The film is loosely based on the novel of the same name by David Saperstein.

The film was shot in and around St. Petersburg, Florida: locations included the St Petersburg Shuffleboard Club, Sunny Shores Rest Home, The Coliseum, and Snell Arcade buildings.

About 10,000 years ago, peaceful aliens from the planet Antarea set up an outpost on the planet Earth, on an island later known to mankind as Atlantis. When Atlantis sank, twenty aliens were left behind, kept alive in large rock-like cocoons at the bottom of the Atlantic Ocean. Now a group of Antareans have returned to Earth to collect them. Disguising themselves as humans, they rent a house with a swimming pool, and charge the water with "life force" to give the cocooned Antareans energy to survive the trip home.

Next door to the house the Antareans are renting is Sunny Shores, a retirement home. Three of its residents, Ben, Arthur, and Joe, often trespass to swim in the pool next door, thinking the house to be unoccupied. They absorb some of the life force, making them feel younger and stronger. Eventually caught in the act, they are given permission to use the pool by the Antarean leader, Walter, on the condition that they do not touch the cocoons or tell anybody else about it. Eventually, the other residents find out, jeopardizing the cocoons.

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