National Geographic Canada HDTV (NGCHD)

Anthony Mackie uncovers a shark mystery with fishermen in Louisiana. (Repeat).

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

The season finale arrives, with three past champions vying for the title. (Repeat).

Chaos forces the captains to adapt and harness control in order to catch Bluefin. (Repeat).

Former champions feel the pressure of maintaining their reps on the leaderboard. (Repeat).

The Hot Tuna tries to get on the board as TJ awaits news on Reba's fate. (Repeat).

A young man's lies could keep him from his fiancée. A gold bar and a pile of cash put a traveler on the watch list. A US visitor is shocked to learn about his unusual criminal record. Mail Centre officers find a riveting artwork has hidden value. (Repeat).

A visiting worker learns he got some bad advice. A fisherman's pot could get him in hot water. Suspicions about a convicted smuggler uncover a scam. A suitcase full of meat is not the main course in a traveler's smuggling buffet. (Repeat).

Students of engineering have an experiment with the crew; a man bound for Alaska wonders if one gun is enough; and toy cameras turn out to conceal contraband. (Repeat).

A revealing look at life on the front lines of national security. (Repeat).

Winter roads begin to melt as temperatures rise. (Repeat).

A marine geologist claims he's found the HMCS Esquimalt, the last Canadian warship sunk in World War Two. Matt, Robin and Herbie jump at the chance to help make history by finding the shipwreck. But they've got to fight stormy seas. (Repeat).

Mexico's gifts to the world include the tomato, avocado, tacos, and tequila; Frida Kahlo and Oscar-winning directors; Mexican wrestling and Latino pop music; silver and rubber; and Mayan astronomy. (Repeat).

A young man's lies could keep him from his fiancée. A gold bar and a pile of cash put a traveler on the watch list. A US visitor is shocked to learn about his unusual criminal record. Mail Centre officers find a riveting artwork has hidden value. (Repeat).

A visiting worker learns he got some bad advice. A fisherman's pot could get him in hot water. Suspicions about a convicted smuggler uncover a scam. A suitcase full of meat is not the main course in a traveler's smuggling buffet. (Repeat).

A visiting worker learns he got some bad advice. A fisherman's pot could get him in hot water. Suspicions about a convicted smuggler uncover a scam. A suitcase full of meat is not the main course in a traveler's smuggling buffet. (Repeat).

A revealing look at life on the front lines of national security. (Repeat).

Mexico's gifts to the world include the tomato, avocado, tacos, and tequila; Frida Kahlo and Oscar-winning directors; Mexican wrestling and Latino pop music; silver and rubber; and Mayan astronomy. (Repeat).

LA is shocked by four shark attacks in four months but are beachgoers safe? (Repeat).

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

The team investigates attacks with one thing in common. (Repeat).

Big and dangerous predators are invading unexpected waters, from golf courses and swimming pools to lakes and backyard keys. Through analyzing user-generated footage, shark experts get to the bottom of how and why sharks seem more willing than ever to meet us on our own turf. In a bizarre twist, people encountering sharks in unexpected places are called to urgent action. (Repeat).

Free-divers and conservationists risk their safety to separate shark attack myths from realities from some of the world's most shark-infested waters off the coast of South Africa. On location are shark attack victims, who tell their stories and enter the water for the first time since their traumatic encounters. (Repeat).

Investigators look at an alarming increase in shark attacks in Northern California. (Repeat).

Anthony Mackie uncovers a shark mystery with fishermen in Louisiana. (Repeat).

Comedians and experts react to outrageous videos of the sharks that broke the Internet. (New).

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

Anthony Mackie uncovers a shark mystery with fishermen in Louisiana. (Repeat).

Comedians and experts react to outrageous videos of the sharks that broke the Internet. (Repeat).

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

LA is shocked by four shark attacks in four months but are beachgoers safe? (Repeat).

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

The team investigates attacks with one thing in common. (Repeat).

Big and dangerous predators are invading unexpected waters, from golf courses and swimming pools to lakes and backyard keys. Through analyzing user-generated footage, shark experts get to the bottom of how and why sharks seem more willing than ever to meet us on our own turf. In a bizarre twist, people encountering sharks in unexpected places are called to urgent action. (Repeat).

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Lisa is forced to make a tough decision. (Repeat).

Winter storms froze a passenger ferry in place on the banks of a raging river. Matt races on land, while Herbie battles ice, tides, and weather to get to the ferry on time. They've got to bust the ferry out and get it into dry dock for repairs. (Repeat).

Sweden's contributions to the modern world are examined. (Repeat).

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Sweden's contributions to the modern world are examined. (Repeat).

Hawaii is shaken by three bizarre shark attacks in less than five months. (Repeat).

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

The team investigates the links between weather events and shark attacks. (Repeat).

It's time for sharks to face off in the ultimate species competition with the greatest matchups the ocean has ever seen. In ten nail-biting competitions, we'll prove once and for all which shark is the MVP of the open sea. (Repeat).

Sharks are invading unexpected places in this enhanced episode. (Repeat).

Six shark attacks occur in New York on July Fourth, turning it into a terrible holiday. (Repeat).