I sidste halvdel af 1800-tallet lever sømændene en risikofyldt tilværelse. Mange fartøjer forsvinder, og historier om en gigantisk narhval, der uden nåde angriber og sænker skibene, begynder at florere. En professor sætter sig for at løse mysteriet om uhyret, og sammen med en frygtløs hvalfanger drager han til søs.

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.

Mandskabet om bord på en atomdrevet undervandsbåd må kæmpe imod sabotører, gigantiske havuhyrer og angreb fra andre undervandsbåde for at redde menneskeheden fra en global katastrofe, der truer alt liv på jorden. Indholdsmæssigt er Irwen Allens film det rene nonsens, men de forbløffende visuelle effekter og den flotte undervandsfotografering gør den til en af de mere mindeværdige SciFi-film i genren.

As the world progresses into the industrial age, a professor studying the "nature of pure matter" is spirited away by a would-be dictator and connived into building a super-bomb, as a young reporter and a girl rescued from the sea attempt to warn him of their mutual kidnapper's intentions to dominate the world with a new and more-deadly-yet weapon.

When a space probe crash-lands on a far-flung Pacific atoll, the craft's alien stowaways decide to take over their new world one creature at a time. Soon, the parasitic life forms latch onto three indigenous critters -- a squid, a crab and a snapping turtle -- and transform them into colossal mutant monsters.

The quest led by well respected scientists to record the Giant Squid.

A man watches an old movie only to find he is being watched by an unholy squid.

In the deep waters of Mexico's Gulf of California, large and ravenous predators are congregating and local fishermen fear them more than sharks.

The scientific search for the elusive giant squid.

Previous attempts to find the giant squid have largely failed. Armed with state-of-the-art cameras and some new theories, a scientific team encounter some of the most unbelievable scenes nature has to offer and finally shine a light on this elusive creature.