Mid-Ocean creatures control light to avoid becoming snacks

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Where transparency becomes a defense.

If you’re a snack-sized squid or octopus living in the ocean zone where the last bit of daylight gives way, having some control over your reflection could be a matter of life and death. Most predators cruising 600 to 1,000 meters below the surface spot the silhouette of their prey against the light background above them. But others use searchlights mounted on their heads…

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