<P> A review board convenes and fires MacNeil from the oceanographic institute for stealing the submarine . She brings the shark tooth to her old professor, former U.S. Navy pilot Lamar Sanders (Sean Lawlor), who believes it belonged to a Megalodon, an enormous species of shark believed to have become extinct 1.5 million years ago . The duo is visited by Dr. Seiji Shimada (Vic Chao), a Japanese scientist trying to determine what attacked the drilling platform . The three review a videotape recorded during MacNeil's submarine voyage, finding images of both the megalodon and a gigantic octopus . MacNeil reflects on the polar ice caps melting due to man - made global warming, and wonders if the creatures are mankind's "comeuppance". Meanwhile, a U.S. "naval destroyer" engages the megalodon, but is destroyed after its guns fail to destroy the shark . MacNeil, Sanders, and Shimada are arrested by a team of soldiers and taken to government official Allan Baxter (Lorenzo Lamas), a rude and racist man who demands their help in destroying the creatures . The three agree to help, in exchange for the government trying to capture the creatures for study rather than destroy them . </P> <P> While working at a naval laboratory to develop a method for luring the creatures, MacNeil and Shimada become attracted to each other and have sex in a utility closet . The incident makes them realize they can attract the creatures using chemicals . MacNeil and Sanders agree to place a trap for the shark in San Francisco Bay, while Shimada returns to Tokyo to attract the octopus . MacNeil and Sanders barely escape the shark after placing the trap with a mini-submarine . The plan fails, however, when the shark destroys another destroyer sent by Baxter . The shark then resurfaces and bites off a large portion of the Golden Gate Bridge, killing many civilians on the bridge . Later, Shimada contacts the Americans and says the Japanese trap, having the same disaster, only succeeded in angering the octopus, which has escaped despite multiple artillery and missile hits . Baxter suggests using nuclear weapons against the creatures, which MacNeil, Sanders, and Shimada strongly oppose due to the risk of marine devastation, coastal damage and human casualties . As an alternative, MacNeil suggests using the same pheromone traps to create a "Thrilla in Manila" by drawing the two creatures together . She believes that because the two creatures were frozen in ice locked in combat, they must be natural rivals and their aggressiveness towards one another will cause them to fight to the death if they're lured together . MacNeil, Sanders, and Baxter are assigned to a submarine to find the shark and lure it to the North Pacific Ocean . </P> <P> After a short search, the submarine brings both the shark and the octopus to an ice trench off the Alaskan coast, where MacNeil first encountered the creatures . Sanders himself ends up piloting the sub after the original pilot loses his nerve and pulls a gun on the captain (Dean Kreyling) before he is overtaken . The octopus and shark begin to fight, Giant Octopus, wraps around Mega Shark, and tries to suffocate him . Mega Shark bites the tentacles to get free . They separate . Mega Shark attacks the submarine . dragging it in its mouth . MacNeil, Sanders, and Baxter man a mini-submarine and detach just as the shark bites the larger submarine in half, killing the rest of the crew . The shark nearly destroys the mini-submarine, but they are saved when a Japanese sub with Shimada on board fires torpedoes at it . The octopus entangles the Japanese submarine and nearly destroys it, but the sub is released after the octopus is attacked by the shark . The two creatures engage in a fierce battle, at the end of which, the octopus strangles the shark after the shark dismembers some of its tentacles, causing it to bleed to death . The two sink, dead, still locked from their battle . McNeil and the others, after watching the showdown between the two monsters, discover Shimada and his sub survived the octopus attack . The film ends with MacNeil, Sanders, and Shimada deciding to visit the North Sea after receiving infrared images of mysterious organic life there . </P> <Ul> <Li> Deborah Gibson as Emma MacNeil </Li> <Li> Lorenzo Lamas as Allan Baxter </Li> <Li> Vic Chao as Dr. Seiji Shimada </Li> <Li> Mark Hengst as Dick Richie </Li> <Li> Sean Lawlor as Lamar Sanders </Li> <Li> Dean Kreyling as U.S. Sub Captain </Li> <Li> Stephen Blackehart as U.S. Sub Sonar Chief </Li> <Li> Larry Wang Parrish as Japanese Typhoon Captain </Li> <Li> Douglas N. Hachiya as Japanese Sonar Tech </Li> <Li> Jay Beyers as Pilot Officer </Li> <Li> Stefanie Gernhauser as Sub Cmdr . Francoise Riley </Li> <Li> Jonathan Nation as Vince </Li> <Li> Russ Kingston as Admiral Scott </Li> <Li> Cooper Harris as U.S. Destroyer Sonar Tech </Li> <Li> Dustin Harnish as U.S. Sub Helmsman </Li> <Li> Colin Broussard as Radioman </Li> </Ul>

Who wins in mega shark vs giant octopus
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