Shark Week Season 30, Episode 5: Shark Vortex

Great White Serial Killer Lives

Every two years in October - in 2008, 2010, 2012 and 2014 - a secluded beach on the central California coast has been the scene of great white shark attacks. Is it the same shark returning again and again? And will the attacks continue in October 2016? Dr. Michael Domeier believes the Surf Beach attacks may be more than a tragic coincidence. With the help of shark experts Ralph Collier and Cal Lutheran, and using satellite tags and DNA technology, he wants to out the killer once and for all. Produced by Shark Entertainment.

42 min

Phelps vs Shark: Great Gold vs Great White

They are one of the fastest and most efficient predators on the planet: Sharks. He is our greatest champion to ever get in the water: Michael Phelps. 39 world records. 23 Olympic golds. The world’s most decorated athlete takes on the ocean’s most efficient predator: Phelps V Shark – the race is on!

42 min

Shark-Croc Showdown

Dr. Mark Meekan and conservationist Paul de Gelder go on an expedition to one the sharkiest places in the world - a remote wilderness called the Cobourg Peninsula in the Northern Territory of Australia. Meekan is there to count sharks and species as part of Vulcan’s Global FinPrint project – Paul de Gelder’s going because he heard that sharks and crocs fight over sea turtles out there. What happens when 14-foot crocodiles move into shark infested waters? That’s what they’re going to find out! Produced by Big Wave.

42 min

Great Hammerhead Invasion

Early November, giant hammerheads arrive off Bimini, in the Bahamas. But why? Leading shark scientist Tristan Guttridge tags and follows these normally solitary sharks to find out. Many appear to be pregnant females, as an ultrasound of a female hammerhead shows. Guttridge believes they spend winter in Bimini to feed the growing young in their bellies – and then move on to the Florida coast to prey on migrating blacktips – and the evidence is unmistakable. Produced by Icon Films.

42 min

Return to the Isle of Jaws

Divers and scientists RETURN TO THE ISLE OF JAWS to unlock the mysteries of this new great white hot spot, just south of Western Australia. They make a startling discovery that causes us to re-think of everything we thought we knew about great whites. Produced by Red Rock Films.

42 min

Alien Sharks: Stranger Fins

ALIEN SHARKS is back in search of some of the world's strangest sharks. Dr. Craig O'Connell goes to the Bass Strait for sawsharks, while Victoria Elena Vasquez and Dr. David Ebert go into deep water in Tokyo Bay to find the star of the show, the goblin shark. They find both sawsharks and goblins - and many more, including ghost sharks, frilled sharks, and the amazing luminescent lantern shark. Produced by Discovery Studios.

42 min

Sharks and the City: LA

Along the coastline of LA, great white sharks are increasing and they seem to be hunting out of season. Dr. Chris Lowe, Director of the CSULB Shark Lab, wants to know why. His investigation takes him to Guadalupe Island, off Mexico, where he finds the answer. Produced by Arrow Media.

42 min

Sharks and the City: NYC

For decades, great white shark numbers were in decline in the waters around New York. But now, seals are back in New York Harbor – can the great whites be far behind? Marine biologist Craig O’Connell tries to find out how close they really are, and shows what a future with great whites in New York will look like. Produced by Pangolin Pictures.

42 min

The Lost Cage

A team of explorers float in a one-of-a-kind shark cage, 500 miles into the Gulf of Mexico. Acting as human lures in the open ocean will they encounter its deadliest shark? Produced by Gurney Entertainment.

42 min

Devil Sharks

From active to extinct, and at every stage in between, volcanoes hold a strong attraction for sharks of all kinds. Across the world, sharks congregate and concentrate around volcanoes and volcanic islands. What is it about volcanoes that make them shark hotspots? Dr. Mike Heithaus dives in several volcanoes to find out. Produced by Pangolin Pictures.

42 min

Shark Exile

In Brazil, Dr. Hazin has successfully reduced the number of shark encounters by simply catching and moving sharks out to the open sea. What’s his secret? And can this solution work in Australia, where encounters are a problem? Produced by Sealight Pictures.

42 min

Shark Storm

At various times of the year and in different locations around the world, sharks of many kinds gather, swarm, and spiral. Dr. Tristan Guttridge and Ornella Weideli conduct a study of just what brings them together, and what’s going on in these shark ‘societies’. Produced by Red Rock Films.

42 min

African Shark Safari

Madagascar is NOT known as a location for great white sharks. According to the shark sanctuary here, both great whites and tigers are ‘extinct’ in Madagascan waters. So why has a great white shark, tagged in South Africa, travelled 1500 miles up the African coast to Madagascar? Craig O'Connell and the team make the long journey to the remote island nation to investigate and see if Madagascar is the next big great white shark hotspot. Produced by Arrow Media.

42 min

Lair of the Sawfish

Experts unravel the mystery behind one of the sea’s strangest creatures, the sawfish, from its evolutionary links to sharks and rays, to its key role in the marine ecosystem. Their goal is to bring the sawfish back from the brink of extinction. Produced by Radley Studios and Delve Creative.

42 min

Sharkmania

A rundown of the greatest moments from SHARK WEEK 2017, featuring the closest calls, biggest bites, greatest gadgets, and viewers’ top picks for the best of SHARK WEEK history. Produced by Discovery Studios.

42 min

Shark School with Michael Phelps

Michael Phelps joins Doc Gruber and Tristan Guttridge of the Bimini Shark Lab to get a crash course on everything ‘shark.’ They’ll dispel the myths and common misconceptions, teach him how to safely dive with sharks - including how to stay calm when a hammerhead swims two feet above his face - and will get Michael Phelps up close and personal with the incredible power of a Great White. Produced by Peacock Productions.

42 min

Shark After Dark: The Sharkiest Place on Earth

Shark After Dark: Going Coastal