episode description
A mysterious sea creature up to 7 feet long, with 10 arms, a sharp beak and a ravenous appetite, has invaded off the coast of North America. Packs of fierce Humboldt Squid attack nearly everything they see, from fish to scuba divers. Marine biologists are working to discover why they’ve headed north from their traditional homes off South America. In 1924, a hunter purposely released a handful of wild boar in the Western United States. Now the pigs number in the hundreds of thousands and reside in all but two of the California's 58 counties. Big, fast, smart and hungry, these animals often out-compete native species and damage fragile native ecosystems. Now hunters are stepping up to be part of the solution. Scoop a handful of critters out of the world’s bays and you'll find tourists from far away shores. Invasive kinds of mussels, fish and more are choking out native species, challenging experts to change the human behavior that brings them from faraway places.
