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Zaat (1971)

PG  |   |  Fantasy, Sci-Fi  |  January 1971 (USA)
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Ratings: 2.6/10 from 3,809 users  
Reviews: 87 user | 42 critic

A mad scientist transforms himself into an aquatic killer.


, (uncredited)


(story), (story), 2 more credits »
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Cast overview, first billed only:
Marshall Grauer ...
Wade Popwell ...
Paul Galloway ...
Gerald Cruse ...
Sanna Ringhaver ...
Dave Dickerson ...
Deputy Sheriff (as Archie Valliere)
Nancy Lien ...
Girl Camper
Russell Holcomb
Gloria Brady
Del Galloway
Hal Nearhoof
Jim Merrill ...
Boy on porch
Elizabeth Barton ...
Girl on porch
Bob Knowles


A mad scientist (and apparent former Nazi) unleashes his master plan: to transform himself into a mutated walking catfish, gain revenge on those who have spurned him, and kidnap nubile young women to similarly transform so that he can breed. Or something like that. Written by <>

Plot Summary | Add Synopsis


It would take an atom bomb to wipe out the walking catfish! See more »


Fantasy | Sci-Fi


PG | See all certifications »

Parents Guide:





Release Date:

January 1971 (USA)  »

Also Known As:

Attack of the Swamp Creatures  »

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:



Aspect Ratio:

1.78 : 1
See  »

Did You Know?


Director Don Barton filled the monster role through a newspaper ad. The ad read: "Wanted: 6'5'' or taller male to play the role of monster in horror movie. Must be experienced swimmer, scuba diver. Acting Ability not required!" Barton said ten people responded. See more »


When Walker Stevens is in bed and Rex is talking to him, the shadow of a boom mic is persistently visible before Martha joins him and the monster spies them through the window. See more »


[Dr. Leopold's opening voiceover rant]
Dr. Leopold: Sargassum, the weed of deceit. Sargassum fish - mighty hunter of the deep! What an inspiration you have been in my plot! Your life of hiding, waiting... stalking your prey. At just the right moment... ATTACK!
Dr. Leopold: I love you. I hope I'll be a good imitator. And my friend, the shark. Cunning, swift... wretched humans, they're afraid of you! I admire you. Soon, I'll swim with you! They'll be afraid!
Dr. Leopold: Oh, mighty scorpion, dangerous beast of the ...
See more »

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User Reviews

How many titles will I hear this movie as?
3 January 2002 | by (Greensboro, N.C.) – See all my reviews

I first read about this movie as being called ZaAt. Then I actually watch it under the name "Attack of the Swamp Monsters." THEN I hear about it once again as The Blood Island of Dr. Z as showed on MST 3k. I have not seen the MST 3k version of this movie, but one has to admit, they would have a LOT to work with. The lighting of this movie was terrible, the kill scenes were very short, the mask! Well, the mask is very self explanatory.

One thing that boggled my mind was after the monster tipped the boat, there were two people floating in the water, while one scrambled to shore. One person in the water was still moving their hands even though it's my best guess that the catfish monster killed them. And then when the monster went up on the land to kill the other person, HE DIDN'T EVEN TOUCH THE PERSON!!! It looked like he just swept a bug off of her chest and she just went limp!!! What?!? I'm no corroner, but I know that somebody doesn't die from being brushed, even if it is by a catfish type monster. My biggest complaint as in every 70's movie, was the lighting. I have never seen worse lighting in my life. You could use the indiglo of a watch and see what was happening better than the lighting from this movie. But what was so bad about it was that there was bad lighting during scenes that looked like they were important, like the fight scene between the people of INPET (shoulda been named "INEPT") and the monster. That looked like it could have been a big scene, if only we could have seen what was going on. And how about those fresh water underwater scenes, you know, with the coral and tropical fish and currents and all. That must have seen some fresh water pond to house coral. Last time I checked, coral doesn't grow in fresh water, never mind that it grew in a pond.

Well, I'll let you watch to enjoy the rest of the movie, although I do suggest you go out and rent the non-MST 3k version, just because sometimes it's fun to enjoy a movie without someone telling you what's funny about it.

15 of 19 people found this review helpful.  Was this review helpful to you?

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