Megalodon, a 50-foot-long cousin of the modern Great White Shark, was considered the most dangerous predator in the 15-million-year-old seas. That belief held until a discovery in Japan in 1992 of a fossilized whale equipped with 44 teeth that equaled those of a Tyrannosaurus rex. Watch as experts recreate an undersea battle using modern whale and shark behaviors, and fossilized evidence to see how the two largest killers of the sea fought for supremacy.

Gargantuan creatures rising from ocean depths to wreak havoc on man! Are they figments of the imagination or living relics of prehistoric times? We investigate the first documented American sea serpent sighted at Cape Ann, Massachusetts in 1639, and the weird fish Coelacanth, caught off Africa and thought to be extinct for 70-million years. We also feature footage, shot by a fisherman off Vancouver's coast, of Cadborosauras, a large creature that is "to science, an unknown animal.

Zach sets out to research the strangest creatures dug up from the depths of the ocean and to see how much they lend to the monsters that are depicted in myth and legend.

Andrew and Brian venture out to solve the mystery of the La Concepcion, a shipwreck near the Bahamas where over 300 men were eaten by sharks in 1563. To discover the truth of why the sharks attacked, the two men will attempt to recreate the circumstances.

Great white sharks are the ocean's deadliest killers, and as they swim closer to our beaches, attacks against humans are on the rise. MonsterQuest leads an expedition to tag the first great white in the Atlantic.

Are monster fish lurking in freshwater lakes and rivers? From the Arctic Circle to the Amazon, follow an expedition to find the biggest and nastiest giant fresh water fish, from catfish large enough to swallow children whole to trout as large as a boat.

The predators of the Underwater Universe have evolved to become our planet's most efficient killing machines. This episode explores the top five deadliest animals that no thinking human wants to tangle with, each more deadly than the next.

Megalodon, a 50-foot-long cousin of the modern Great White Shark, was considered the most dangerous predator in the 15-million-year-old seas. That belief held until a discovery in Japan in 1992 of a fossilized whale equipped with 44 teeth that equaled those of a Tyrannosaurus rex. Watch as experts recreate an undersea battle using modern whale and shark behaviors, and fossilized evidence to see how the two largest killers of the sea fought for supremacy.

Gargantuan creatures rising from ocean depths to wreak havoc on man! Are they figments of the imagination or living relics of prehistoric times? We investigate the first documented American sea serpent sighted at Cape Ann, Massachusetts in 1639, and the weird fish Coelacanth, caught off Africa and thought to be extinct for 70-million years. We also feature footage, shot by a fisherman off Vancouver's coast, of Cadborosauras, a large creature that is "to science, an unknown animal.

Zach sets out to research the strangest creatures dug up from the depths of the ocean and to see how much they lend to the monsters that are depicted in myth and legend.

Andrew and Brian venture out to solve the mystery of the La Concepcion, a shipwreck near the Bahamas where over 300 men were eaten by sharks in 1563. To discover the truth of why the sharks attacked, the two men will attempt to recreate the circumstances.

Great white sharks are the ocean's deadliest killers, and as they swim closer to our beaches, attacks against humans are on the rise. MonsterQuest leads an expedition to tag the first great white in the Atlantic.

Are monster fish lurking in freshwater lakes and rivers? From the Arctic Circle to the Amazon, follow an expedition to find the biggest and nastiest giant fresh water fish, from catfish large enough to swallow children whole to trout as large as a boat.

The predators of the Underwater Universe have evolved to become our planet's most efficient killing machines. This episode explores the top five deadliest animals that no thinking human wants to tangle with, each more deadly than the next.

Megalodon, a 50-foot-long cousin of the modern Great White Shark, was considered the most dangerous predator in the 15-million-year-old seas. That belief held until a discovery in Japan in 1992 of a fossilized whale equipped with 44 teeth that equaled those of a Tyrannosaurus rex. Watch as experts recreate an undersea battle using modern whale and shark behaviors, and fossilized evidence to see how the two largest killers of the sea fought for supremacy.

Gargantuan creatures rising from ocean depths to wreak havoc on man! Are they figments of the imagination or living relics of prehistoric times? We investigate the first documented American sea serpent sighted at Cape Ann, Massachusetts in 1639, and the weird fish Coelacanth, caught off Africa and thought to be extinct for 70-million years. We also feature footage, shot by a fisherman off Vancouver's coast, of Cadborosauras, a large creature that is "to science, an unknown animal.

Zach sets out to research the strangest creatures dug up from the depths of the ocean and to see how much they lend to the monsters that are depicted in myth and legend.

Andrew and Brian venture out to solve the mystery of the La Concepcion, a shipwreck near the Bahamas where over 300 men were eaten by sharks in 1563. To discover the truth of why the sharks attacked, the two men will attempt to recreate the circumstances.

Great white sharks are the ocean's deadliest killers, and as they swim closer to our beaches, attacks against humans are on the rise. MonsterQuest leads an expedition to tag the first great white in the Atlantic.

Are monster fish lurking in freshwater lakes and rivers? From the Arctic Circle to the Amazon, follow an expedition to find the biggest and nastiest giant fresh water fish, from catfish large enough to swallow children whole to trout as large as a boat.

The predators of the Underwater Universe have evolved to become our planet's most efficient killing machines. This episode explores the top five deadliest animals that no thinking human wants to tangle with, each more deadly than the next.