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The Sea Serpent (1985)

Serpiente de mar (original title)
A serpent, created by radioactivity, threatens a Spanish coastal town.


Amando de Ossorio (as Gregory Greens)


Amando de Ossorio (screenplay) (as Gordon A. Osburn)


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Cast overview, first billed only:
Timothy Bottoms ... Pedro Fontán
Taryn Power ... Margaret
Jared Martin ... Linares
Ray Milland ... Professor Timothy Wallace
Gérard Tichy ... (as Gerard Tichy)
Carole James Carole James ... Jill
Jack Taylor ... Asesino
León Klimovsky León Klimovsky ... Dr. Moore (as Leon Klimovsky)
Miguel de Grandy Miguel de Grandy
Paul Benson Paul Benson
Charly Bravo Charly Bravo
Víctor Israel ... Porto (as Vic Israel)
José Canalejas ... (as Joe Canals)
Eduardo Bea Eduardo Bea ... (as Edward Beamont)
Teresa del Olmo Teresa del Olmo ... (as Texsa Elmer)


A nuclear detonation in the Atlantic re-animates a prehistoric sea monster. The creature terrorizes the Spanish coastline, attacking swimmers, boats and lighthouses without mercy. A sea captain whose ship was sunk by the monster and an American tourist whose best friend was killed by the beast team up to stop the monster, along with the help of respected oceanographer (Ray Milland). Written by Jeremy Lunt <durlinlunt@acadia.net>

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Adventure | Horror


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Release Date:

29 June 2015 (USA) See more »

Also Known As:

Hydra See more »

Filming Locations:

Sesimbra, Setúbal, Portugal

Company Credits

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Technical Specs


Sound Mix:



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Did You Know?


This film was Ray Milland's last theatrical feature. See more »


American air force men in Mission Control are wearing leather jackets and jeans instead of uniforms. See more »


Referenced in Amando de Ossorio: el último templario (2001) See more »

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User Reviews

Spanish monster movie in which a huge , mutated serpent attacks fishers , tourists and a lighthouse
27 June 2013 | by ma-cortesSee all my reviews

Thrilling film in low budget plenty of chills , screams and lots of silly amusement . I admire creative effort to keep budget down , but this time is too little . It deals with an American Air Force jet carrying a atomic bomb is forced to drop it in the Ocean. Then , there takes place a nuclear detonation in the Atlantic that re-animates a giant sea monster . The creature terrorizes the Spanish coastline , capable of causing death and destruction . 1985 , Galicia , Spain , a sea captain , along with a seaman (Jared Martin) aboard a boat called ¨Alcantara¨ and set out in fishing when the strange monster attacks , being sunk and the crew devoured alive . Later on , the captain , whose ship was sunk by the monster , is condemned , but he escapes and join forces with an American tourist (Taryn Power , Tyrone Power's daughter) whose best friend was eaten by the monster in Estoril , Portugal . The couple goes to Lisbon asking for help a respected as well as likable professor (this film was Ray Milland's last theatrical feature) and both of whom team up to stop the beast .

"Hydra" is a humdrum adaptation based on monster movies from a story and screenplay by the same director , Amando De Ossorio . This is a middlingly entertaining European monster movie in the 50s style , though packs absurd situations and cheesy frames when takes place monster appearance , attacking swimmers, boats and lighthouses without mercy . ¨Sea serpent¨ is an atmospheric as well as eerie movie that contains bemusing scenes when appear the giant monster and take place his attacks in some ridiculously made scenes , including primitive special effects . The picture has numerous "older technique" FX such as transparency , miniatures , matte paintings, scale models , reverse-footage , trains and helicopter similarly to toys ; all of them were made by Amando De Ossorio and makeup artist Fernando Florido . It's a slight fun with professional make-up , naive special effects , functional art direction and passable set decoration by Jose Luis Galicia who designed several Paella Western . You will watch it and think it is either awful , hilarious, a masterpiece, or all three . It's a simple entertainment with embarrassing images , naive special effects , campy production design and evocative setting . Although critics do not appreciate much this picture ; however has a kind of loopy , Ed Wood quality that must be endured to be totally considered . The fable is mostly silly and laughable , though a few Naif effects and action are professionally made . Some illogical parts in the argument are more than compensated for the excitement provided by the monster appearance though some scenes are a little bit cheesy and ridiculous . While not a hit during its original run, the film has got a limited gossip , when reissued many years later considered to be one of the best worst monster films of cinema history .

"Hydra: Monster of the Deep" was lousily directed by Amando De Ossorio . Amando was a slick craftsman who began in films as a writer and assistant director and continued his career by making short films and industrial documentaries . He was one of the main directors of the Spanish horror boom in the 70s, specially for his quartet of films about the living dead Templars which started with his first great success and immensely popular ¨Tombs of the Blind dead¨ which to be continued by a trilogy : ¨Return of evil dead¨ , ¨Ship of Zombies or Blind dead 2¨ and ¨Blind dead 3 or The night of the sea gulls¨ . Amando owns his own studio and created and/or designed many of the simple special effects sequences you see in any of his many imaginative undertakings . Amando who recently passed away was a good craftsman who realized a lot of amusing as well as entertaining films . He displayed a varied career and specialized on all kind of genres as Western in "Rebels in Canada" and "Grave of the Gunfighter" , Monster movie as ¨Serpent of sea¨ and , of course, Terror as ¨Malenka¨ , The possessed¨ and ¨night of witches¨ . Ossorio also studied painting and photography , moreover, he also made his living as a painter of creepy images of the Knights Templar in his later years.

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