Guessing which of the catches comes out on top.

As bluefin season begins, the fleet reels from a tragic loss.

The captains look back at the wildest battles they waged out in the North Atlantic.

The highs and lows of Capt. Tyler McLaughlin's career; Capt. McLaughlin was the young upstart of the Gloucester, Mass., fleet who arrived to unseat Capt. Dave Cararro.

A look at the hilarious on-deck antics of the brave bluefin fishermen.

The captains relive the top-20 close calls of the past six seasons.

The fleet takes big risks as a massive storm front slams the fishing grounds.

The race is on to land the first fish of the season, bringing big money for one captain.

With fewer than four days left in the season and two captains sidelined, it's anyone's game.

With a week left in bluefin season, the fleet competes for final paychecks.

With four weeks left, two of the boats face the challenge of having novice fishermen on board, which could make or break their season.

In Gloucester, Mass., the commercial fishermen must deal with numerous obstacles at sea standing in the way of hooking bluefin tuna.

There are two weeks left to compete for the top spot.

The story of bluefin fisherman Capt. Dave Marciano, who helms the Hard Merchandise, and his crew.

A behind-the-scenes look at Capt. Carraro's quest to land the most tuna.

Picking which of the hookups ends with a bluefin tuna on deck and a huge payday.

The captains teach a class on how to catch bluefin tuna.

Tensions start to boil for Captain Paul's new crew on Wicked Pissah; Captain TJ Ott takes his 8-year-old nephew on his first big tuna trip.

In the final week of the season, Hard Merchandise holds a small lead over the fleet, but when a single fish could be worth more than $20,000 the battle for the top earning boat will go to the very last day.

With less than five days left before the season ends, crews continue to compete through the very last day of fishing.

The season passes the halfway point and being on the water for the past two months takes its toll on crew members; one mate decides between quitting to spend more time with his wife and kids continuing on.

Fishing for bluefin tuna is a way of life for many residents of Gloucester, Mass. "Wicked Tuna" takes viewers into the unrelenting North Atlantic waters infamously spotlighted by the novel-turned-feature film "The Perfect Storm," to follow captains who are relied upon by their families, their shipmates, and by Gloucester itself, to haul in boatloads of the large but elusive bluefin. The pressure to deliver is unforgiving -- the fishing season is short and tuna populations are dwindling -- but one "monstah" catch can reel in just as large of a payday.

When bluefin tuna season ends in Gloucester, Mass., it's just beginning in North Carolina's Outer Banks, a perfect opportunity to pit North vs. South in a pro fisherman contest for the ocean's most lucrative prey. Venturing south are the best crews from Gloucester to take on top local fleets in the treacherous Outer Banks, where the weather is more unpredictable than up north, and the seas can be extremely rough. The Gloucester rod-and-reel vets must master "greensticking" -- trolling artificial squid from a 30-foot fiberglass pole to lure the elusive species to the surface. Top-dollar bluefin can be worth as much as $20,000 each, but a short season and small government catch quota means explosive rivalries surface quickly.

Featuring pop-ups with insider facts and insights into the fishermen's thoughts.

Extreme survivalists go head to head in a race across the Alaska wild. Using ingenuity, experience and just the gear they can carry in their packs, the participants have 60 hours to reach the finish point of each leg of the adventure -- the series features 13 legs -- and in addition to navigating treacherous glaciated river valleys, barren ridgelines, and high mountain peaks, the challengers battle hunger, dangerous predators and unpredictable weather. There is no grand prize awaiting each leg's winner, other than the pride of accomplishing a grueling feat. For season three, the 12 competitors are divided equally into four teams -- Military, Endurance, Alaskans and Lower 48.

Each year adventurers make Alaska's mighty Yukon River their home for five weeks. They float downstream on homemade log rafts to sell firewood and other supplies to remote villages. The reality-documentary "Yukon River Run" presents hourlong episodes tracking the progress of various crews. As harsh winter months approach and threaten both safety and success, stakes are heightened as rafters endeavor to cash out and escape from the cold.

The old Dolly Parton hit "9 to 5" isn't a tune worth humming for the blue-collar pioneers featured in "Filthy Riches." The series spotlights ingenious Americans who skirt a conventional workplace in favor of making a living in the deep rivers, soggy mud flats and wild backwoods of the U.S. Ray Turner, for example, has been catching eels in Delaware for 30 years. He uses a self-made smokehouse in the woods to cook the critters and sell them. Billy Taylor and his sons hunt for prized ginseng root in the Appalachians. Taylor, a fully licensed wild ginseng dealer, promotes sustainability by planting its berries. In Maine, Jim Campbell and Andy Johns make the coastal mud flats their office, as they dig for valuable bloodworms to sell to fishermen. And Greg Dahl and Albert DeSilva are burl hunters. A burl is a hard, unwieldy outgrowth on a tree, usually at the trunk. Burls have value because of the spectacular patterns found in them when cut open.