We found out that the greatest swimmer of all time is no match for a great white. Here are 5 other things we learned when Michael Phelps went (virtually) head-to-head against the sharks.
Don't miss Sharktacular, the must-see survival guide to Shark Week.
This haunting new species of ghost shark was discovered for the first time on Alien Sharks: Return to the Abyss, part of the Shark Week 2014 lineup.
The Top Home Videos from Sharktacular. Get ready for Shark Week right here.
Great whites aren't the only sharks that breach. Shortfin makos are so fast that they can launch completely out of the air when attacking. From Shark Week 2015's Monster Mako.
The only thing that stands between two divers and a massive great white is a filmsy cage made from PVC pipes and magnets. From Shark Week 2016's "Sharks
Two divers are surrounded by deadly oceanic whitetip sharks looking for an opportunity to strike. From Shark Week 2016's "Deadliest Sharks."
A great white shark attacks SharkCam from behind in the shallows of Guadalupe Island. Attacks usually occur here from below and at depth. From Shark Week 2016’s "Jaws of the Deep."
Chris Fallows dives into a notorious shark kill zone at night to see if any sharks have developed a taste for night hunting, and one takes an interest in his cage. From Shark Week 2016’s "Air Jaws: Night Stalker."
After landing at 12.5 foot, pregnant tiger shark, the team does an ultrasound to discover at least she’s carrying 20 well-developed pups!
Shark experts Jeff Kurr and Andy Casagrande are in a small boat surrounded by giant great whites in this heart-pounding scene from Lair of the Mega Shark, part of the Shark Week 2014 lineup.
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."
A Cuban shark expert takes a rather unorthodox approach to tagging sharks: grabbing them by the tail. These silky sharks remain unusually calm in his hands. From Shark Week 2015's "Tiburones: Sharks of Cuba."
Chris Fallows nearly has his head bitten off when a great white sneaks up from behind in New Zealand. Are the sharks here hunting as a pack? From Shark Week 2015's "Air Jaws: Walking With Great Whites."
The time slice camera helps shark experts analyze a great white shark's attack on Great White Matrix, part of the Shark Week 2014 lineup.
Trevor Burns wrestles a great white shark to rescue Elyse Frankcom from its jaws in this scene from I Escaped Jaws 2, a highlight from Shark Week 2014.