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.

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, Mark Cuban, billionaire and owner of the Dallas Mavericks, describes the worst investment pitch he's ever heard. It involves afros.

An underwater photographer gets a little too close to a shark.

Grad student Paul Clerkin and marine biologist David Ebert make history as they put the first satellite tag ever on a megamouth shark. From Shark Week 2015's "Alien Sharks: Close Encounters."

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

At over 20 feet long, this massive female great white shark is likely the largest ever filmed - and one of the largest ever seen! From Shark Week 2015's "Island of the Mega Shark."

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!

A white shark stalks Dickie Chivell as he's towed through the water in HORNET, a one-man shark cage. Will the shark attack the seal decoy… or Dickie? From Shark Week 2015's "Air Jaws: Walking With Great Whites."

In today's countdown, Andy Casagrande reveals which Shark Week moment made it to third place!

The team trades chum for music, hoping to strike a chord with nearby great whites. Luckily (or not), great whites have an ear for death metal. From Shark Week 2015's "Island of the Mega Shark."

The bull shark is one of few species that’s built to survive in both salt and fresh water.

Mermaid and conservationist Hannah Fraser and shark cameraman Andy Casagrande keep the party rolling on the Shark After Dark Live web after show.

Using electrical heartbeat machines, Les Stroud tests whether sharks can detect victims by the sound of their heart.

The diving team hopes to shed some light on the sevengills' attack patterns and quickly find themselves double, triple, and even quadruple teamed! From Shark Week 2015's "Sharks of the Shadowland."

The oceanic whitetip is an aggressive shark with a deadly reputation. This open ocean hunter was responsible for the deadliest shark attack in history: the U.S.S. Indianapolis attacks during World War 2. From Shark Week 2015's "Ninja Sharks."

The Cuban, caught in 1945, was originally measured at 21 feet long. DNews and Discovery placed him at #3 in our countdown of the Top 5 Legendary Sharks.