20 best movies like Mega Shark vs. Giant Octopus (2009)

In the early 21st century, mankind has colonized the oceans. The United Earth Oceans Organization enlists Captain Nathan Bridger and the submarine seaQuest DSV to keep the peace and explore the last frontier on Earth.

When an alien force wages war on Earth, only the crew of the USS Iowa - the last American battleship, stands in their way.

In the distant future, a federation marshal arrives at a research lab on a remote planet where a genetic experiment has gotten loose and begins feeding on the dwindling scientific group.

A special-ops team is dispatched to fight supernatural being that have taken over a European city.

Four young outsiders teleport to a dangerous universe, which alters their physical form in shocking ways. Their lives irrevocably upended, the team must learn to harness their daunting new abilities and work together to save Earth from a former friend turned enemy.

Government agents find evidence of extraterrestrial life at the South Pole.

After an abrupt and violent encounter with a French warship inflicts severe damage upon his ship, a captain of the British Royal Navy begins a chase over two oceans to capture or destroy the enemy, though he must weigh his commitment to duty and ferocious pursuit of glory against the safety of his devoted crew, including the ship's thoughtful surgeon, his best friend.

A mother and a father search for their only child as a giant asteroid headed for Earth, triggering a series of apocalyptic events.

On a lush tropical island, working under a secret government charter, Martin Drake has not only grown sprawling acres of giant vegetables, but inadvertently spawned two mammoth reptiles as well. Now they've broken free of their enclosures, and Drake has only one option: kill the creatures before word gets back to Washington and they close him down. When Drake's first team of well-armed mercenaries gets wiped out within hours of setting down in the jungle, he turns to one lone hunter, The Cajun, to go in single-handedly. But will The Cajun be cunning enough to find the creatures and destroy them before they turn the blue waters red with the blood of tourists. The only hope is to bring the monsters together and make them fight. When one emerges victorious, that will be the time to strike and kill the other. It's a risky plan, but ultimately the only one that may work. One of David Carradine's last movies.

30 feet of pure terror is the result of an experimental drug used in a biochemical lab and this mutated nightmare is pure evil! Half-African cobra and half-diamondback, he's 30 feet long with a giant appetite for terror.

On the 100th anniversary of the original voyage, a modern luxury liner christened "Titanic 2," follows the path of its namesake. But when a tsunami hurls an ice berg into the new ship's path, the passengers and crew must fight to avoid a similar fate.

After Air Force One goes down during a storm over the Bermuda Triangle, the United States Navy is dispatched to find the escape pod holding the President. A giant monster beneath the ocean awakens and attacks the fleet.

When a former Special Ops commando visits Pompeii, his wife and daughter are trapped as Mt. Vesuvius erupts with massive force. While his family fights to survive the deadly onslaught of heat and lava, he enlists his former teammates in a daring operation beneath the ruins of the city of Pompeii.

In February 1942 Us forces engaged an unidentified flying object above Los Angeles. Now almost 70 years later, the alien invaders have returned.

A decade after his heroic defeat of the monstrous Kraken, Perseus-the demigod son of Zeus-is attempting to live a quieter life as a village fisherman and the sole parent to his 10-year old son, Helius. Meanwhile, a struggle for supremacy rages between the gods and the Titans. Dangerously weakened by humanity's lack of devotion, the gods are losing control of the imprisoned Titans and their ferocious leader, Kronos, father of the long-ruling brothers Zeus, Hades and Poseidon.

Captain Martin Stone is leading a finely-trained, elite platoon of Allied soldiers as they attack an enemy bunker. Underestimating their enemy's strength, they are quickly beaten back into the forest. As they try to regroup, they are suddenly attacked by the same soldiers they had just killed a few minutes earlier. Forced to flee deeper into Russian territory, they discover one of war's most terrifying secrets and realize they have woken up a far more deadlier enemy.

The film opens with a baby dinoshark swimming away from a broken chunk of Arctic glacier that calved due to global warming. Three years later, the dinoshark is a ferocious predatory adult and kills tourists and locals offshore from Puerto Vallarta, Mexico. The protagonist, Trace, is first to notice the Dinoshark and witnesses his friend get eaten, but has trouble convincing people that a creature of such antiquity is still alive and eating people.

In the quiet waters of the Mississippi, body parts are being discovered. No one knows what is behind it all, until a huge man eating bull shark turns up. This bull shark is different, as it can breath in fresh water, making a deadly encounter between anyone who comes before it. John Sanders must now try and reach the surface, with his ex-wife and whilst being held hostage.

When a solar storm wipes out the air traffic control system, Air Force One and a passenger jet liner are locked on a collision course in the skies above the midwest.

The American destroyer escort, the USS Haynes commanded by Robert Mitchum, detects a German U-Boat, commanded by Curt Jürgens, resulting in a prolonged, deadly battle of wits.

A team of climbers is assembled by a rich and eccentric man to rescue a missing expedition he sent up to a forbidden mountain who disappeared after sending out one last disturbing radio message.

When mankind beams a radio signal into space, a reply comes from ‘Planet G’, in the form of several alien crafts that splash down in the waters off Hawaii. Lieutenant Alex Hopper is a weapons officer assigned to the USS John Paul Jones, part of an international naval coalition which becomes the world's last hope for survival as they engage the hostile alien force of unimaginable strength. While taking on the invaders, Hopper must also try to live up to the potential his brother, and his fiancée's father, Admiral Shane, expect of him.

Many years ago, hundreds of locals and tourists were massacred by giant man-eating sharks in the infamous 1916 Jersey Shore attacks. But that's just a legend... or is it? It's a holiday weekend on the Jersey Shore and, unbeknownst to anyone, underwater drills have attracted dozens of albino bull sharks to the pier. When a man goes missing, TC (The Complication), Nookie and friends fear the worst and plead with the police chief to close down the beach. It isn't until a famous singer is eaten alive during a performance on the pier that the shark hunt begins. Now, the Preppies must work together with the Guidos in order to save the Jersey Shore and its inhabitants from another vicious slaughter.

Jackson Slate, famous treasure hunter, is out to find the legendary Lost Gold Of Cortez in the open waters off a secluded island in the Caribbean Sea. Using dynamite to blast his way through centuries of silt, new chasms are created reaching miles below the ancient ocean floor. From here, an ancient evil is released, that quickly, savagely, and without warning, destroys Jackson s boat and kills his crew. The sole survivor of the carnage, Jackson teams up with marine biologist, Sarah, to venture back to the site and investigate the horrific events. They extract an egg from the darkest depths of the ocean and take it back to the lab to investigate. But when it hatches, they realise they have awaken a deadly prehistoric monster, the P-Rex, which will stop at nothing until the entire island is destroyed...

It's the year 2707. Earth's natural resources have all but been exhausted by mankind. Battles rage for the remainder between the competing Corporations. During one such battle the seal is broken and awakens an ancient and deadly machine that was once defeated thousands of years ago. The order that awaited it's return must now lead a small group of soldiers to destroy it once and for all.

In a land controlled by feudal barons, a great warrior and a young boy embark on a journey across a dangerous land to find enlightenment. A genre-bending martial arts series very loosely based on the classic Chinese tale Journey to the West.

In a planet where humans must scavenge the post-apocalyptic barren wasteland, Hirokin – a reluctant warrior with a dark past – sets off on mission to fulfill his destiny. Having fought to the death to save his wife and son from the planets evil dictator – Griffin – and his elite army of hunters, the lone warrior is left for dead in the vast desert. Armed with his samurai blade, Hirokin is forced to choose between avenging the murder of his family and fighting for the freedom his people. In a twist of fate and with a small rebellion by his side Hirokin s vision finally becomes clear.

Following a deadly viral outbreak, private military soldier Max Gatling leads a handful of survivors and a ragtag band of robots against an army of the infected.

When they're hired to recover the lost treasure of Columbus, married scuba divers Sebastian (Chris Carmack) and Dani (Laura Vandervoort) think they've hit the jackpot. But as they get closer to the fortune, the couple begins to suspect their employers have their own agenda. Hitting upon the real plan, the two come to the chilling realization that they may be expendable and that there's much more than riches at stake.

Aliens invade, this time delivering a clear ultimatum. The fate of humanity hangs in the balance as the U.S. President and citizens decide if these aliens are to be trusted… or feared.

When a young man's bride is kidnapped by an evil king, he turns to Hercules for help. The fallen hero has been living in exile, banished for killing his family, but the young man's courage inspires Hercules. Together, they fight to rescue the bride and reclaim the honor of Hercules.

Morgan Adams and her slave, William Shaw, are on a quest to recover the three portions of a treasure map. Unfortunately, the final portion is held by her murderous uncle, Dawg. Her crew is skeptical of her leadership abilities, so she must complete her quest before they mutiny against her. This is made yet more difficult by the efforts of the British crown to end her pirate raids.

After freak climate and weather events destroy the world around them, a group of rogue scientists attempt to reverse the deadly new ice age.

The Florida Keys in 1840, where the implacable hurricanes of the Caribbean scream, where the salvagers of Key West, like the intrepid and beautiful Loxi Claiborne and her crew, reap, aboard frail schooners, the harvest of the wild wind, facing the shark teeth of the reefs to rescue the sailors and the cargo from the shipwrecks caused by the scavengers of the sea.

When the Universe decides what it wants, it's pointless to resist. With his family's life at stake, Joseph Steadman finds himself the unwilling test subject of a maniacal scientist in a battle that could save the world – or destroy it.

During the critical experiment that would rid David Banner of the Hulk,a spy sabotages the laboratory. Banner falls in love with the spy, Jasmin, who performs missions only because her sister is being held hostage by Jasmin's superiors. Banner and Jasmin try to escape from the enemy agents to rebuild their lives together, but the Hulk is never far from them.

A battle-weary ex-Special Forces Operative buys a ranch in remote American West to flee from the world, and encounters a strange series of trespassers, including a beautiful elf princess and a Native American mystic and Orcs. When the Orcs invade his property, John must give up his isolation to become a hero, before the Orcs unleash their dragon god on our world.

A mysterious warrior teams up with the daughter and son of a deposed Chinese Emperor to defeat their cruel Uncle, who seeks their deaths.

The Soviets have developed a revolutionary new jet fighter, called 'Firefox'. Worried that the jet will be used as a first-strike weapon—as there are rumours that it is undetectable by radar—the British send ex-Vietnam War pilot, Mitchell Gant on a covert mission into the Soviet Union to steal the Firefox.

A fanatical animal rights activist releases giant pythons into the Everglades, believing the wild animals should be set free. When they start decimating the native animal population, an over-zealous park ranger feeds experimental steroids to wild alligators so they can fight back. The giant pythons and gargantuan alligators go on a killing spree, and it is now left up to the two feuding women to put aside their differences to put a stop to the creatures and the destruction.

Fourteen hundred years ago, a tormented soul walked the earth that was neither man nor god. Hercules was the powerful son of the god king Zeus, for this he received nothing but suffering his entire life. After twelve arduous labors and the loss of his family, this dark, world-weary soul turned his back on the gods finding his only solace in bloody battle. Over the years he warmed to the company of six similar souls, their only bond being their love of fighting and presence of death. These men and woman never question where they go to fight or why or whom, just how much they will be paid. Now the King of Thrace has hired these mercenaries to train his men to become the greatest army of all time. It is time for this bunch of lost souls to finally have their eyes opened to how far they have fallen when they must train an army to become as ruthless and blood thirsty as their reputation has become.

In a futuristic world where the polar ice caps have melted and made Earth a liquid planet, a beautiful barmaid rescues a mutant seafarer from a floating island prison. They escape, along with her young charge, Enola, and sail off aboard his ship. But the trio soon becomes the target of a menacing pirate who covets the map to 'Dryland' – which is tattooed on Enola's back.

British Naval Officer fights pirates on Madagascar.

A young twenty-something diver living in the Florida Keys discovers he has the power to breathe underwater.

Jack Carver, a former member of the Special Forces takes the journalist Valerie Cardinal to an Island to visit her uncle Max who is working in a Military complex on the Island. As they arrive Valerie gets captured by the minions of Doctor Krüger. After the destruction of his boat Jack finds out about the true purpose of the Facilities on the Island, which is the creation of genetic soldiers.

During a rescue mission, a team of Navy Seals discover that a terrorist group have access to deadly US built Stinger missiles, and must set out to locate and destroy them before they can be used.

When a colossal tectonic shift causes the sea level to start rising, a microbiologist gathers the DNA of as many species as she can, while the military creates an "ark" in a desperate attempt to preserve life on Earth.

A documentary crew follows an elite unit of soldiers in the wake of an alien invasion.

When a science experiment goes horribly wrong, gigantic fish gain appetites for human flesh.

Taking place some time between 'Tron' and 'Tron: Legacy', 'Tron: Uprising' tells the story of Beck, a young program who becomes the skillful leader of a revolution inside the computer world of The Grid.