Feral

The white sand beaches and emerald green waters of Destin, Florida, are the setting for the world's luckiest fishing villages. Beneath the water's surface, however, it's a different story.

The feral hog is one of the most formidable species on the planet. Possessing a unique combination of high reproductive capacity, size and adaptability, the feral hog absolutely decimates entire ecosystems.

Dusty Wildman Crum makes it his mission to eradicate Burmese pythons, which alter the ecosystem of the Florida Everglades by eliminating over 99 percent of the native mammal population.

The green iguanas escaped their terrariums in the 1960s and found the Florida ecosystem to be a much more hospitable environment to call home. Michael Onega is doing his part to clean up the environment by removing as many iguanas as possible.

Explores how after fishermen from the Ohio River Basin bring rusty crawfish to Leech Lake as bait and release them when done, the rusties begin pushing out the native crawfish and destroying the weed beds other fish need.

Common carp are one of the most widely introduced species of fish in the world. Most people in the US won't eat them, referring to them as a trash fish. These fish are so plentiful, Curt runs a year-round, full-time guiding service targeting them.