Strange Creatures at 500 Meters Below
In Strange Creatures at 500 Meters Below, narrator David Attenborough explains how plankton retreats into the ocean depths as the Sun rises. To follow it, we descend in a submarine where pressure increases, and temperatures drop. At 500 meters (1,640 feet) below, strange creatures emerge. Organic particles, known as marine snow, drift down, serving as food for many animals like the sea spider, which uses feathered leg-like appendages to capture it. Meanwhile, the sawtooth eel waits motionless, ready to strike at silhouetted prey swimming near the faint glow from the surface. This video is excerpted from BBC’s Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.
Lesson Express
Q: What is marine snow, and why is it important?
A: Marine snow consists of organic particles drifting from above, providing a vital food source for deep-sea creatures.
Q: How does the sea spider catch its food?
A: It uses feathered appendages to trap marine snow and carefully wipes it into its jaws.
Q: How does the sawtooth eel hunt in the deep sea?
A: It remains motionless, watching for prey silhouetted against the dim light from above before striking.
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