Scientists have seen for the first time how a squid camouflage itself. This is usually done by octopuses and cuttlefish.

To determine this, scientists conducted a laboratory experiment in which they wanted to study how a squid can

camouflage.When the squid were in a clean part of the aquarium, they were light in color, but due to the presence of algae, their color changed to dark. Research shows that this feature is very useful for survival.

It was previously known that octopuses and cuttlefish actively camouflage themselves with their environment. But this has not been reported for a third type of cephalopod, squid.

Now, in a study published inScientific Reports, scientists from the Okinawa Institute of Science and Technology (OIST) have shown that squid can also camouflage themselves. This work will help to understand how squids see and perceive the world around them. Also, researchers will learn more about their behavior, and use this information to save the species.

Squid usually swim in the open ocean, but wewanted to understand what happens when they move a little closer to a coral reef or if they are being chased by a predator. If the environment under which squids mimic is so important, then the increase or decrease in the population can also be associated with the health of coral reefs.

Ryuta Nakajima, doctor and researcher at OIST

The authors conducted an experiment, they usedan aquarium, half cleared of algae, in which squid swam. Next, they took one underwater camera and one regular camera to record any color changes. When the squid were in a clean part of the tank, they were light in color. But near the algae they quickly darkened.

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