Explore your world with powerful and insightful news and information documentaries from the worlds of science, nature, medicine and outdoor adventure.

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Expand your horizons with powerful and insightful news and information documentaries from the worlds of science, nature, medicine and outdoor adventure.

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With the advantage of spotter planes, veteran Tyler and young gun Joe battle for the most monster bluefin until Joe helps strongman Niko get back into contention; when Niko's zapper fails, Tyler steps in to save the day.

Harpoon Hunters

Keep Your Enemies Closer

As the bluefin fishery reaches its mid-season peak, three centuries-old fishing strategies compete for dominance; Joe banks on instinct, Tyler uses science to gain the upper hand, and strongman Niko relies on legacy -- but nobody relies solely on luck.

Boom Phase

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As the fleet spots the first giants, Joe fights for his lead over Niko and Tyler; all bets are off as old-timer Bill joins the derby; Emmett struggles with the choice to fish without a plane; Dylan gets a $6,000 tuna.

They Might Be Giants

Captain Joe Dion takes his sons to sea, landing two bluefins and witnessing a great white shark feeding on a humpback whale.

Like Father, Like Son

Captains Joe and Tyler hit bluefin gold as second-generation harpooner, Niko Chaprales, fails to land even one.

Bluefin Bloodline

A group of four harpooners chase some of the highest-priced fish using only fast boats and aim; Niko must prove he can run a boat while Joe hunts to support his family as the fleet races to land the first bluefin worth thousands.

One Man, One Spear

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A crew of elite fishermen harpoon bluefin tuna off the shores of the Northeastern U.S.; the race for a hunt that could reel in a fortune.

S1 E4 | They Might Be Giants