Francis Roberts is stranded miles outside of town after his snow mobile breaks down. But when his father finds him, he's in more trouble than ever before.

Stan Zuray attempts to cross a fast-flowing river covered in merely a thin layer of ice with his sled dogs.

Joey gives Francis a shooting lesson, passing down the knowledge of how to hunt because he believes better hunters make a stronger community in Tanana.

It's the Wrights versus the Zurays in this flying target shooting competition. Watch to find out who will win the best hunting spot!

A flood is imminent in Tanana, but can everyone evacuate in time?

James must prepare for the rising flood waters - that is, until a hungry black bear threatens his dogs and he is forced to take action.

The Yukon Men are faced with a surging river threatening to flood town, business competition between two rival dog kennels, and a desperate need for firewood.

The powerful river surges near town - but will the flood preparations be enough to save Tanana from destruction?

Craig Ferguson takes a look at some small, medium and large-sized shark teeth. Will he have second thoughts about getting in the water with them?

Cooperative feeding among sharks is rare, but these reef sharks decide they just might be able to help each other out in this scene from "Shark City."

Was the ancient shark Megalodon capable of biting an entire whale's head off? Watch our test chomp to find out if this is even remotely possible.

Dave Canterbury and Cody Lundin of "Dual Survival" hope to find out if tiger sharks hunt differently as night. The sharks seem more comfortable at night. Maybe a little too comfortable!

How do shark eating habits stack up against those of humans? Find out which species eats more ravenously, which has pickier food choices or which will devour just about anything.

Can a shark drag you into the water if you're standing on shore? Our host, Terry, uses a 100-pound sand bag and a piece of bait to find out.

Celebrate 25 years of Shark Week with this sneak peak from 2012's Air Jaws Apocalypse.

Kari, Grant and Tory from MythBusters unveil Sharkzilla, an INSANELY AWESOME replica of a Megalodon, a giant ancient shark that measured over 50 feet in length.