Uploaded February 2025 | Updated September 2026, 2 weeks ago

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Steve Backshall uncovers the secrets of sharks, the world’s most infamous predators. He heads out into the Atlantic Ocean to dive with blue sharks, a beautiful but deadly species which can travel up to 10,000km per year looking for food. He finds out how their big pectoral fins allow them to glide gracefully through the water, and how they are now threatened by overfishing for their fins.

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