When a group of trespassing seniors swim in a pool containing alien cocoons, they find themselves energized with youthful vigor.
| Writing | Tom Benedek | Screenplay |
| Production | David Brown | Producer |
| Production | Lili Fini Zanuck | Producer |
| Production | Richard D. Zanuck | Producer |
| Sound | James Horner | Original Music Composer |
| Camera | Donald Peterman | Director of Photography |
| Editing | Daniel P. Hanley | Editor |
| Editing | Mike Hill | Editor |
| Directing | Ron Howard | Director |
| Visual Effects | Paul Huston | Visual Effects |
| Production | Penny Perry | Casting |
| Art | Jack T. Collis | Production Design |
| Art | Jim Duffy | Set Decoration |
| Costume & Make-Up | Aggie Guerard Rodgers | Costume Design |
| Directing | Carline Davis-Dyer | Script Supervisor |
| Costume & Make-Up | Eddie Marks | Costume Supervisor |
| Production | Beverly McDermott | Casting |
| Camera | Keith Peterman | Camera Operator |
| Camera | John LeBlanc | Camera Operator |
| Camera | Zade Rosenthal | Still Photographer |
| Camera | Jordan Klein Sr. | Underwater Camera |
| Lighting | Ken M. Suzuki | Gaffer |
| Visual Effects | Charlie Mullen | Animation Supervisor |
| Crew | Phillip Norwood | Visual Effects Art Director |
| Crew | Bill Kimberlin | Visual Effects Editor |
| Visual Effects | Ken Ralston | Visual Effects Supervisor |
| Crew | Joseph A. Unsinn | Special Effects Coordinator |
| Sound | Laurel Ladevich | Sound Designer |
| Sound | Gary Rydstrom | Sound Designer |
| Sound | Gary Summers | Sound Designer |
| Costume & Make-Up | Janis Clark | Hairstylist |
| Costume & Make-Up | Kevin Haney | Makeup Artist |
| Costume & Make-Up | Robert Norin | Makeup Artist |
| Costume & Make-Up | Rick Stratton | Makeup Artist |
| Production | Robert Doudell | Associate Producer |
| Crew | Brian Penikas | Makeup Effects |
| Crew | Greg Cannom | Makeup Effects |
| Sound | Godfrey Marks | Dialogue Editor |
| Writing | David Saperstein | Story |
| Visual Effects | David Berry | Visual Effects |
| Visual Effects | Scott Farrar | Visual Effects |
| Visual Effects | Ralph McQuarrie | Visual Effects |
| Crew | Charlie Picerni | Stunts |
| Visual Effects | Tony Laudati | Animation Technical Director |
