National Geographic Channel HDTV (NGCHD)

Chris Hemsworth investigates how people can live harmoniously with sharks. (Repeat).

A team investigates growing reports of bull sharks stealing from fishermen. (Repeat).

Sharks are venturing closer to shore. One day, they could end up on land. (Repeat).

Brazen attacks targeting people. Examining if sharks are learning to crave human flesh. (Repeat).

Rare footage explores the most astounding shark attacks – and defenses. (Repeat).

Dive into the deep to get up-close with sharks – maybe too close. (Repeat).

Paid Programming. (Repeat).

Rare Collectibles TV offers viewers the ability to learn about historic silver and gold coins.

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Professional shark diver Eli Martinez and scientist Matthew Smukall plunge into the nighttime world of Tiger Beach to investigate whether shark behavior changes once the sun goes down. (Repeat).

The bull shark sets out to prove that it is the new champion of the chomp. (Repeat).

Revealing the facets of shark personalities that are rarely chronicled. (Repeat).

Can great white sharks change the color of their skin and camouflage? (Repeat).

Every year tiger sharks gather in big numbers in Maui. What's the cause? It's a mystery that's a decade in the making. Now, a team of fearless shark scientists gets hands-on with one of the ocean's largest predators to find out. That means free diving, face-to-face and unprotected. But these young women will do whatever it takes to get the data they need to crack the case. (Repeat).

A vacation hot spot is rocked by a series of shark attacks, chaos reigns. (Repeat).

Drones reveal sharks living closer to the shores than people like to imagine. (Repeat).

White sharks move north to Canadian waters where scientists investigate. (Repeat).

To find out why sharks are drawn to Hawaii's volcanoes, biologists Dr. Mike Heithaus and Dr. Frances Farabaugh free dive with one of the most dangerous sharks: the tiger shark. (Repeat).

Sharks go head-to-head with surfers, scientists, sea lions, even whales. (Repeat).

In the Bahamas, more than 30% of dolphins have shark-bite scars. With a never-before-seen non-toxic gel bite pad and life-sized dolphin decoy, Dr. Mike Heithaus and Dr. Valeria Paz collect bite impressions from three shark species that might be the predators. Bites from bull sharks, tiger sharks and great hammerheads — up to 14 feet long — are compared to scars photographed on dolphins. (Repeat).

Ultra-athlete Ross Edgley pits himself against four legendary sharks. (Repeat).

The two biggest of the big three. Great Whites and Tiger sharks are two of the most dangerous predators in the ocean. And they get big – up to 20 feet and 18 feet, respectively. But can they grow even larger than that? Where can we find the world's biggest? Two teams of scientists are diving in to uncover the secrets of these powerful and majestic creatures. (Repeat).

Researchers investigate if orcas are hunting great whites in New Zealand. (Repeat).

Marine biologists investigate why sharks attack boats. (Repeat).

Sharks go head-to-head with surfers, scientists, sea lions, even whales. (Repeat).

Surfing towns in both Australia and Bali are stunned by shark attacks. (Repeat).

Florida and New York both experience a frightening surge of shark attacks. (Repeat).

Shark attacks spike in surfing communities in Hawaii and California. (Repeat).

A look whether the attacks done by sharks in pairs are coincidental or not. (Repeat).

Shark experts investigate the jaws of the world's three deadliest sharks. (Repeat).

Paid Programming. (Repeat).

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A feast of extraordinary shark-feeding events is presented. (Repeat).

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Dive into the jaw-dropping stories of anyone and anything that's found themselves prey to the deadliest, toothiest terrors of the sea. The boundless hunger and curiosity of sharks can lead them to chow down on the most unexpected things, such as big game like hippos and crocs or inanimate objects like kayaks, cages and chicken coops. (Repeat).

Around the world, reports of shark-on-shark attacks are on the rise. Now, off South Africa's dramatic southern coast, a new hotspot has emerged — a bay where white sharks hunt other sharks. In a groundbreaking investigation, Enrico Gennari and Lacey Williams lead a team of experts into the deep to capture conclusive evidence of sharks eating sharks! (Repeat).

Scientists investigate the giant tiger sharks of Norfolk Island. (Repeat).

Steve Backshall encounters a diverse world of sharks in the Atlantic. (Repeat).

Steve Backshall explores the Indian Ocean and its diverse wildlife. (Repeat).

Steve joins scientists to find shark hot spots in Pacific Ocean. (Repeat).

Steve Backshall looks for the 30 plus sharks of the British Isles. (Repeat).

Jeremiah Sullivan dives into the stories of shark all-stars. (Repeat).

How one of the largest Bull Sharks ever caught, grew to become a giant. (Repeat).