College girl Karen visits her dad, a marine biologist, at his island compound in the Florida Everglades. Her partying friends show up, dance to Neil Sedaka tunes, and taunt the doctor's ... See full summary »


(as William Grefé)


(original screenplay), (executive script consultant)

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Complete credited cast:
Joe Morrison ...
Dr. John Hoyt
Valerie Hawkins ...
Karen Richardson
John Vella ...
Jack Nagle ...
Dr. Richardson
Sandy Lee Kane ...
Louise, dark redhead
Deanna Lund ...
Jessica, honey blond
Lois Etelman ...
Donna, light redhead
Blanche Devereaux ...
Susan, frosted blond
Doug Hobart ...
Egon as a monster
Judy Lee ...
Ruth - sunbather on dock
Robert Stanton ...
Sheriff Bob
Tony Gulliver ...
First Boy
Ron Pinchbeck ...
Second Boy
John Castle ...
Third Boy
Barbara Paridon ...
First Girl


College girl Karen visits her dad, a marine biologist, at his island compound in the Florida Everglades. Her partying friends show up, dance to Neil Sedaka tunes, and taunt the doctor's creepy assistant, Egon. Soon they're victims of a wetsuit-wearing. bipedal jellyfish monster. Jealous of Karen's boyfriend, Egon kidnaps her and carries her to his secret underground lair. Written by Jay Phelps <>

Plot Summary | Add Synopsis


Special Singing Star Neil Sedaka!


Horror | Sci-Fi





Release Date:

17 October 1966 (USA)  »

Company Credits

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Did You Know?


On this supposed isolated island there are roof of other houses clearly visible in several scenes. Also visible are power lines from telephone poles. See more »


Referenced in Bikini Drive-In (1995) See more »


Do the Jellyfish
Written by Neil Sedaka
Performed by Neil Sedaka
See more »

Frequently Asked Questions

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User Reviews

Makes the Everglades look pretty
14 September 2003 | by (Michigan) – See all my reviews

The main thing I dug about this movie is the cool pad under the sea where the jellyfish man hangs out! You swim down to the bottom of the lake and you find a cave. Swim through the cave you end up in a swingin' mad scientist lab/paradise cove! It's really cool, You come up through the floor of the lab and you're not underwater anymore. Surrounded by big foam rocks and special 60's science equipment in the walls, it's like a honeymoon suite or something! Plus, the color in this movie is really nice, and it makes everything seem a little extra appealing. Maybe that's why I was so impressed with this little hideout under the sea!

If you see this movie on the Something Weird DVD after "Death Curse of Tartu" you will be shocked to notice that the Florida everglades don't look like such a dismal place after all. They're all bright green and pretty, like a summer vacation! Tartu's movie make the Everglades look like hell on earth. Sting of Death shows the other side.

Lastly, my favorite thing about this movie - THE JELLYFISH. What are they, little Glad sandwich baggies tied up with sparkley ribbon floating in a lake somewhere? Just bobbing up and down like someone just ate a crazy piece of candy and threw their colorful and clear wrapper in the water. The fish don't move, just bob with the waves. They don't attack, they just chill. They don't even have recognizable jellyfish features. Since when do jellyfish heads stand out about 2 inches from the water and never sink under?

And the JELLYFISH man with the huge balloon head. I think I wanna be him for Halloween. Looked like a beach ball spray painted grey. I think I'd get too hot, though. And the deformed guy sometimes has a right eye and sometimes he doesn't. That's tricky!

This movie is funny. Watch it because it's funny. And the main girl looks like Winona Ryder and Alissa Milano mixed together. 5/10.

6 of 7 people found this review helpful.  Was this review helpful to you?

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