When Sharks Attack

In 2016, sharks descend on the island of Maui, turning paradise into chaos. 7 attacks in 11 months - more than twice the previous ten-year average. Attacks are usually rare here. Experts investigate awe-inspiring, underwater volcanoes and ancient craters, to the bizarre, mutant sharks from Fukushima, to a dark secret about Maui's sewage system. What they uncover could be cause for global concern.

The 100 miles of crystal clear waters just north of Miami, Florida is some of the most popular coastline in the country. But in 2017, locals and tourists fell victim to a mysterious rise in shark attacks. Over the course of the year, 9 beachgoers are bitten. A team of investigators uncover clues in their search for the truth.

San Diego, California is one of the most visited coastal destinations in the country. But in 2009, this community was rocked by a spate of shark attacks. After a deadly incident the year prior, there were six bites in just over six months. A group of experts revisit the accounts to determine the cause of the spike.

Every year, Galveston Island in south Texas greets upwards of 5M visitors to its beaches. In 2004, the fishing, surfing and beach play were shattered when three locals were attacked by sharks just weeks apart. Shark attacks are rare off Texas beaches, so locals want answers. Experts examine what might have happened. Are the changes permanent? And will Galveston beaches ever be safe again?

In 2009, fear grips Australia when sharks terrorize the coastal community of New South Wales. 17 attacks over the course of the year - more than four times the annual average. Interactions with sharks here are usually rare, leaving experts searching for answers and what they discover could impact beach-goers around the globe.

Jacksonville, Florida's amazing beaches are the best-kept secret in the South. But this peaceful paradise was rocked in 2015 and 2016 when twelve shark attacks defied the odds and left locals searching for answers. From surfers to swimmers, experts re-visit the circumstances of these attacks and search for answers.