Season 4, Episode 8
May 13, 2011
A look at how giant Humboldt squid are invading the North Pacific and decimating the West Coast salmon population.
Season 4, Episode 7
April 29, 2011
River-dwelling bull sharks, which can live in saltwater and freshwater, are studied.
Season 4, Episode 6
April 22, 2011
Anglers reel in a swordfish with a razor-sharp blade; an electric eel with strong charges; an enormous thresher shark; and a giant ray with a venomous whip.
Season 4, Episode 5
April 19, 2011
Catfish wranglers use only their hands in an Oklahoma fishing competition; shark callers in Papua New Guinea use handmade tools to capture and kill sharks.
Season 4, Episode 4
March 22, 2011
Investigating the Asian Carp, an insatiable creature that has infiltrated America's waterways. Included: how they got here, where they are going and what scientists and anglers are doing to fight back.
Season 4, Episode 3
March 7, 2011
Examining those sea creatures who arm themselves for attack, including an electric eel with charges as strong as tasers and the fearsome sawfish.
Season 4, Episode 2
February 28, 2011
Follow intrepid biologists Justin Grubich and John Odenkirk on their journey through Egypt to tag and track the elusive and enormous Nile perch.
Season 4, Episode 1
February 15, 2011
An angler is yanked overboard by a ten-foot blue shark; a fisherman barely dodges a flying marlin; two daring spear fishermen dive in shark-infested waters on a quest for a scientific breakthrough.
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