Underwater Universe
Shark Tagging (3:12)
Sharks have long been one of the planet's most feared predators. Today, several species are endangered and researchers are fighting to conserve them, despite their nefarious--and undeserved--reputation.
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Shark Tagging
Shark TaggingVideo Clip (3:12)
Video Clip (3:12)
Sharks have long been one of the planet's most feared predators. Today, several species are endangered and researchers are fighting to conserve them, despite their nefarious--and undeserved--reputation.
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Tidal Resonance
Tidal ResonanceVideo Clip (2:44)
Video Clip (2:44)
The Bay of Fundy in northeastern Canada generates the most extreme tides on the planet, rising and dropping as much as 60 feet between high and low tide.
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The Science of Water Pressure
The Science of Water PressureVideo Clip (3:14)
Video Clip (3:14)
Water pressure is one of the deadliest forces in the universe. What possesses some people to challenge this force, and what are the dangers they face?
