Sharks VS Orcas, Dolphins, & More! | 2025 Sharkfest MEGA Episode | National Geographic

In this Mega Episode, Sharks face off against the most dangerous marine predators. Featuring full episodes:

Great White vs. Tiger Shark
Up close and personal with some of the largest great whites and tiger sharks ever recorded, including the famed great white Deep Blue.

Bull Shark vs. Hammerhead
Shark experts launch an investigation into bull sharks and great hammerheads after a rare video is discovered that shows them going head-to-head.

Orca vs. Great White
Researchers in New Zealand dive with great white sharks, in an attempt to discover if they are being hunted and eaten by killer whales.

Sharks vs. Dolphins: Blood Battle
Sharks and Dolphins have shared the ocean for millennia, but scientists have only just begun to understand the complex relationship between sharks and dolphins.

Sharks vs. Dolphins: Bahamas Battleground
In The Bahamas, more than 30 percent of dolphins have shark bite scars. Dr. Mike Heithaus and Dr. Valeria Paz investigate which sharks are attackings.

Jaws vs. Boats
Viral videos of sharks attacking boats abound. Dr. Mike Heithaus and PHD Candidate Sara Casareto investigate what’s causing this clash.