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?

Shark After Dark's Taryn Southern and Bob the Shark meet Sharkzilla, a Megalodon-sized mechanical shark, at VidCon. They're joined by Tory from MythBusters.

On Shark After Dark, Bob the Shark heads to SeaWorld to meet with the humans (don't worry, Bob doesn't bite) and his archenemies: the dolphins.

On Shark After Dark, Blimp from "Voodoo Sharks" shows off his unique Shrimp Dance.

Tickle from Moonshiners shares some of his favorite concoctions with Shark After Dark host Josh Wolf, and Bob the Shark feels left out.

On the final night of Shark After Dark, Bob the Shark faces off against his "alien shark" cousin Blorb the Shark, aka the Tom Green of the Ocean.

Bob the Shark and David "The Hoff" Hasselhoff sing the Shark After Dark theme song (now huge in Germany) and has a shark-to-shark chat with Sharkzilla.

On Shark After Dark, host Josh Wolf tosses to a clip of Ian Ziering in Sharknado... but no wait, it's actually a clip of Ian dancing at Chippendales!

On Shark After Dark, Taryn asks Bob the Shark and Dominic Monaghan questions from our Twitter audience. #SharkAfterDark

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.

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.

On Shark After Dark, actress Tara Reid ponders how whale sharks are made (whale shark = whale shark?) and other shark mysteries...

On Shark After Dark, Bob the Shark returns and somehow ends up on a plane with actress Tara Reid and actor Ian Ziering...

Watch the best of Bob the Shark from Shark After Dark, Discovery's first live late-night talk show, on Sunday, August 4.

On Shark After Dark, actress Alison Sweeny shares the shocking tale of a reality contestant's fear of sharks.

Shark After Dark host Josh Wolf faces his fears and goes diving with sharks, along with his pal television personality Carrie Keagan.

Fisherman Chris O'Neill got the surprise of a lifetime when he accidentally hooked a 6-foot juvenile great white shark 15 miles off the coast of Atlantic City, New Jersey.

A filmsy cage is sometimes no match for bone-crushing shark jaws! Download the DiscoveryGo app to see more.

On the final night of Shark After Dark, Bob the Shark faces off against his "alien shark" cousin Blorb the Shark, aka the Tom Green of the Ocean.

Scientists tag a juvenile tiger shark for the first time - a big win for shark conservation - on Spawn of Jaws: The Birth, part of the Shark Week 2014 lineup.

Amy Kukulya is the Shark Week robotics engineering expert who brought you the jaw-dropping images captured by REMUS SharkCam. Get to know Amy and her work with the Woods Hole Oceanographic Institution.

Sharks are returning to New York harbor after disappearing for decades. But why? Tuesday, July 25 10p.

Scientists discover a great white shark pupping ground in the Sea of Cortez on Spawn of Jaws: The Birth, part of the Shark Week 2014 lineup.

Bob the Shark visits a kid's classroom to lay down some questionable shark facts on Shark After Dark Live, part of the Shark Week 2014 lineup.

An oceanic whitetip shark appears out of nowhere to attack a diver off the coast of Hawaii. From Shark Week 2016's "Deadliest Sharks."

This prehistoric powerhouse employed a unique strategy to reel in its prey.

Responsible for the deadliest shark attack in history, the oceanic whitetip shark is beautiful but increasingly rare. From Shark Week 2016's "Deadliest Sharks."

What's a lost shark? And how did the ninja lanternshark get its name? Dive in with Vicky Vasquez, a graduate student at the Pacific Shark Research Center.

Meet the gentle filter-feeders of the deep.

This sports diver has a dolphin partner named JoJo. JoJo has been known to go after and kill a shark if he thinks his friend is being threatened. From Shark Week 2016's "Sharks Vs. Dolphins: Face Off."

Shark numbers are on the rise, but they're still climbing from a deep decline.

From cancer research to weather watching, sharks have helped humans engineer a better life.