Ridley Turtles Guided by the Moon
In Ridley Turtles Guided by the Moon, narrator Sir David Attenborough explains how the Moon influences the ocean, specifically when Ridley turtles come to lay their eggs. The turtles come during the first or last quarter of the Moon so that the ocean is weaker and less likely to uncover their eggs. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.
Lesson Express
Q: When do the turtles emerge?
A: The turtles emerge at high tide.
Q: Why do 400,000 turtles come to the same beach to nest?
A: With so many baby turtles, it ensures that some will escape predators and survive.
Q: Why is it beneficial that the turtles lay their eggs in the first or last quarter of the Moon?
A: The tides are weaker at this time, so it’s less likely they’ll wash the eggs up out of the sand and make them vulnerable to predators like vultures.
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