The Hawaiian island of Oahu becomes besieged by shark attacks in 2015.

South Africa is home to the world's deadliest beach for shark attacks.

In 2011, the Seychelles archipelago is rocked by two deadly shark attacks in two weeks.

Just miles apart, two children are attacked by sharks within one hour of each other.

Twelve days of bloodshed on the Jersey Shore give rise to America's fear of sharks.

A look into what caused an increase in shark attacks around the Bahamas in 2002.

Florida is the "shark attack capital of the world."

Investigators seek the cause behind a strange surge of shark attacks in Texas.

A spike in bull shark attacks in North Carolina leaves experts scrambling for answers.

Sharks unleash a reign of terror in top tourist destinations.

Australia experiences nine terrifying shark attacks in 2015.

A formerly safe beach in Mexico is the site of three shark attacks in a matter of weeks.

Beneath the still serenity of the Atlantic coastline lurks a dark danger in the safe, calm waters of the North Carolina and Virginia beaches.

Usually a pristine location, the waters of Cancun suddenly become a hot spot for shark attacks between 2011 and 2013, with six attacks along the shores; scientists work to figure out the cause behind the surge in attacks.

The 25-mile coastline of Recife, Brazil, is one of the most dangerous places for shark attacks.

In Western Australia, shark attacks are on the rise, and investigators are racing to find out why.

A tropical paradise becomes one of the world's deadliest islands for shark attacks.

Three shark attacks in 13 months stun beachgoers on the otherwise peaceful beaches of Cape Cod, Mass.

California is the site of an alarming spate of shark attacks.

Experts search for the cause behind surges in shark attacks in vacation destinations.

Experts search for the cause behind the mystery surge in shark attacks occurring in three countries.

From the coast of America to exotic beaches around the world, the number of reported shark attacks has increased in the last half century, many of which are occurring in new and surprising places. In these enhanced episodes of "When Sharks Attack," experts investigate the chilling incidents in an effort to determine exactly what is affecting some of nature's most feared fish. The deep-sea saga employs underwater photography, news archives and testimony to deep dive into the mysterious and deadly attacks.

Discovery's megapopular Shark Week franchise includes the hit talk show "Shark After Dark," which dives into highlights from the night's festivities and previews the next day's programs. Celebrity guests, shark experts and shark aficionados, among other devotees of the marine creatures, offer commentary.

Aquatic ecologist Zeb Hogan gets up close and personal with bizarre giants of the water, specimens equally enormous in proportion and odd in appearance. Among other adventures, Hogan investigates flying fish from Asia that are invading America's waterways, and he searches for one of North America's toothiest and most-misunderstood monster fish, the alligator gar. Some of the species Hogan encounters have survived for centuries but now face the threat of extinction, and he presents groundbreaking research undertaken to protect them.

Put up your dukes -- er, paws -- and prepare to discover epic, bone-shattering clashes between some of the world's deadliest predators. From lions, tigers and bears to meerkats, mongoose and mice, the series features testosterone-induced battles between some of the biggest, baddest and often surprising fighters in the animal kingdom, revealing the extraordinary motivations and strategies that fuel each incredible brawl.

"Move as millions. Survive as one." That's the catchphrase of this seven-part event for which a National Geographic team spent two-plus years recording across 20 countries and all seven continents. Narrated by Alec Baldwin, it tells the stories of many of the planet's species and the journeys they undertake to ensure their survival. The diverse range of animals shown -- many revealing behaviors never caught on film before -- include Botswana zebras, Mali elephants, flying foxes in Australia, Pacific white sharks, and the white-eared kob of the Sudan, thought to have been destroyed during decades of violence.

Africa is home to some of the deadliest creatures of all, and in this series, you'll see them.

Searching for the world's strangest creatures.

Produced by the team that created BBC's "Planet Earth" series, "The Hunt" explores the relationship between predators and their prey. Sir David Attenborough narrates this documentary while the cameras follow the animals in their natural habitats. With a specific focus on strategy, the hunters are examined in detail -- from their use of the environment to their sharp instincts and physical prowess. On the other side of the fence are the hunted, which use their senses and defense tactics to flee when they feel threatened. Each episode centers on a different habitat, and the last one focuses on the state of the planet.