Sarah Zylinski and Sonke Johnsen from Duke University in North Carolina, US, carried out the research. They say this switchable camouflage allows the animals to hide more effectively in their uniquely gloomy marine environment.
When sunlight diffuses evenly through the water, it passes through transparent animals too, rendering them almost invisible
Would have beena great fiction story...if it was fiction
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Or, to put it another way, the reason Cthulhu has yet to be found.
Let me through, I'm a colour therapist!