A ridiculous if funky surfer monster movie. America's youth are doing what they do best on the beach in the mid-1960s, dancing to rock and roll, fooling about with the opposite sex, and surfing of course. The local marine scientist, Dr Lindsey (Jon Hall), has a very dim view of these activities, especially as his son Richard (Arnold Lessing) for some reason prefers girls and surfing to helping Dad out with fish and test tubes...
Then one of the bikini clad girls is killed by some sort of monster. Dr Lindsey thinks it may be a mutant fish though Richard just thinks it is a local maniac. Soon another surfer is killed, as well as Dr Lindsey's bitchy new wife Vicky (Sue Casey) and even Richard's best friend Mark (Walker Edmiston) is attacked. Maybe Richard is right and it is a maniac dressed as a giant fish...
The film is a joyous mess, with a cool surfer rock soundtrack. The monster is rather unscary and laughable and the film is shamelessly exploitative with plenty of footage of girls in bikinis dancing on the beach. Drivel but fun.