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A Sci Fi Channel Original Movie released September 25, 2010, this film centers on the rampage of a half-shark half-octopus whose handlers have lost control of it.The film would later go on to inspire Piranhaconda, a sort of Spiritual Successor in 2012. Currently two sequels to Sharktopus are in development. The first sequel, Sharktopus vs Pteracuda was aired August 2, 2014 on Syfy.
This film contains examples of:
All Part of the Show: Some of the beachgoers, including a pair of women and a father and son, wonder aloud if one of the titular character's attacks is all part of a show. One obnoxious teen lingers even after it starts eating people on-stage, snickering and saying "Awesome!".
Always a Bigger Fish: In the beginning of the film a beach girl is attacked by a shark while swimming off the shoreline, but the Sharktopus saves her by devouring it.
Artistic License – Biology: A surprising amount, even for a movie about a mix-and-match critter made up of two totally unrelated creatures.
Also, a more minor point - an octopus doesn't have the tentacular clubs at the end of its arms. A squid does, but "Sharkquid" just doesn't have the same ring to it.
How did the Sharktopus breathe on land? Is it part landshark?
Heck, how does it even swim? It doesn't have a shark's tail or a cephalopod's siphon for propulsion; it just waggles its tentacles around slightly and at random.
The "egg case" which the second film's sharktopus comes from doesn't look anything like an actual mermaid's purse. Octopuses lay eggs individually, and great whites (the type of shark which the creature's forebody best resembles) give live birth.
Art Shift: Sharktopus has a different visual appearance in the sequel.
Possibly justifiable as the first one having been female (it left an egg case behind) and the second, male.
Belligerent Sexual Tension: Andy and Nicole are less than cordial towards one another when they first meet, and for a while after that, but you can tell they're going to end up together by the end of the movie.
Berserk Button: Hurting the marine biologist that raised it is this for the second Sharktopus in the sequel. Both her abusive, greedy uncle (who outright says he locked her in a closet right in front of it) and the Pteracuda (who is trying to eat her) are attacked presumably for this reason.
Big Bad: Vlad in the sequel. While he's working for an offscreen boss, he's the one responsible for Pteracuda's rampage and it's controller throughout most of the film.
Roger Corman as the guy taking the old coin found on a beach. It also makes for a funny moment when he bites the coin to see if it's real. Given Corman's legendary...erm, frugality, you can just see him calculating just how many cheap b-movies he can fund with it.
Similarly, Corman's daughter, Mary Corman, appears as the bungee-jumping girl.
Happens in the sequel when the guy responsible for making the Pteracuda and releasing the Sharktopus to fight it gets killed by both at the same time.
Imperial Stormtrooper Marksmanship Academy: For a guy with a submachine gun, shooting at a 20-some foot tall Shartopus (which tends to remain fairly still while he shoots,) Andy sure manages to miss a LOT of his shots.
Intrepid Reporter: Stacy actively seeks out the Sharktopus so she can cover the story. Her insistence to get up close and personal with the monster eventually gets both her and her cameraman killed.
Another one appears in the sequel. She surprisingly lives.
Jerk with a Heart of Gold: Andy seems at first nothing more than a mercenary who loves cheap booze and cheap women, but he later refuses an offer of $1 million to not kill the titular monster. Mind you, this is just after his best buddy, Santos, is pulled overboard and chewed up, so Andy has a good excuse.
Immune to Bullets: The Sharktopus' main body can withstand machine gun fire. It's tentacles sort of float in and out of it depending on how they want the plot to unfold.
Same goes for the Pteracuda in the sequel. Bullets don't seem to do more than annoy it.
It's Been Done: Take a look at an earlier film with a suspiciously similar plot (minus the military angle) and a suspiciously similar monster: Devil Fish, an Italian Jaws ripoff made in the 80's. You know these people are scraping the bottom of the barrel when they rip off a godawful Italian ripoff. Thankfully, this film doesn't take itself as seriously.
Plot Armor: The only sensible explanation as to why the Sharktopus is so hesitant to eat Andy at the end, and the explosion doesn't hurt him when it kills the creature.
Previously On: Sharktopus vs Pteracuda starts off with a brief recap of the original film.
Redeeming Replacement: The second Sharktopus is much less monstrous than the first and while it does kill people, it mainly does so when pissed off (which due to what's done to it, is understandable). It even protects the woman that raised it from the Pteracuda and kills her abusive uncle.
Roaring Rampage of Revenge: After Santos, his best friend, gets killed, Andy spends the rest of the movie trying as hard as he can to kill the Sharktopus in a fury.
This is shown more directly in the sequel, as the second Sharktopus presumably lacks the original's brain alterations and, due to being raised as an aquarium animal is only aggressive when it's pissed off. Meanwhile, the Pteracuda is stuck on 'kill everything that moves' mode.
Tasty Gold: The old man bites the coin he found on the beach to see if it's real.
Too Dumb to Live: Stacy has been pursuing the Sharktopus throughout the entire film just to get a scoop, has repeatedly witnessed just how dangerous it is, has already been rescued once before from being eaten alive by a timely intervention of the heroes, and yet still tries to document it when it already killed her cameraman and is approaching her at the end.
Turned Against Their Masters: After the device that enabled the scientists to control their project gets smashed, this happens—although it's not so much against its masters as it is against humanity in general.
Subverted with both monsters in the sequel. The Sharktopus is dangerous, but doesn't go after people specifically until it's royally pissed off and the Pteracuda is largely being controlled by Vlad or doing what it's been programmed to do.
Unusually Uninteresting Sight: An old man and a woman are on a beach with a metal detector. The woman finds an old coin, and is then grasped by the Sharktopus's tentacles, dragged into the water, and slain (all rather slowly). The man just stands there in Dull Surprise mode, waits until she is dead... and then goes to get the coin. Not out of place at all in a movie like this, though.