A group of biology students head to the Florida Everglades for a holiday, but instead of fun in the sun, they run into trouble with a mutated, bloodthirsty, and quite deadly jellyfish-man-monster.
| Actor | Role |
|---|---|
| JJoe MorrisonDr. John Hoyt | Dr. John Hoyt |
| VValerie HawkinsKaren Richardson | Karen Richardson |
| JJohn VellaEgon | Egon |
| JJack NagleDr. Richardson | Dr. Richardson |
| SSandy Lee KaneLouise | Louise |
 Deanna LundJessica | Jessica |
| LLois EtelmanDonna | Donna |
| BBlanche DevereauxSusan | Susan |
| DDoug HobartEgon (monster) | Egon (monster) |