whoa. all right. we got him. awesome work. woo-hoo! >> reporter: biologists believe some people released their pet pythons into the everglades in the late 1970s. they multiplied and multiplied again. they've become a serious threat to florida's fragile ecosystem. >> you can do go to everglades national park and be hard-pressed for find a single mammal there. single squirrel, single rabbit, fox, deer. the pythons have been taking out everything they can get their mouths around. >> reporter: they've even start to eat the king of the everglades, alligators. in less than two years trappers have captured more than 2,000 pythons. but studies show that the snakes are adapting rapidly and could move further north into colder climates. >> how powerful is he right now? >> very. almost got me in the face. just missed my nose by a fraction. >> reporter: for every snake captured and killed, the state pays on size.