In Australia found “city octopus”

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В Австралии нашли «город осьминогов»Complex burrows of sand and shells are home to cephalopods, that were considered to be solitary creatures.

A group of scientists from Australia, USA and Canada have reported finding an unusual settlement of octopus in the Gulf of Jervis Bay.

Complex burrows of sand and shells are home for at least 15 cephalopod species Octopus tetricus, once considered solitary creatures.

An international team of researchers has recorded 10 hours of video from the life of this “city” at a depth of about 15 meters. Scientists have documented how the octopus met, lived together, talked with each other, chased outsiders octopus and even evicting each other from holes. In addition, the researchers found that some of the burrows are built using shells from eaten octopus prey.

“Such behavior is a product of natural selection, and can be very similar complex social behavior of vertebrates. This suggests that in certain conditions, evolution can lead to very similar results in different groups of organisms,” explained the study’s lead author David Shiel from Alaska Pacific University.

Additionally, this is not the first discovered “the city” cephalopods. In 2009, scientists found a so-called Octopolis, a place located near Jervis Bay, where octopuses and other species, lived together, and met once a year for mating.

“In both locations there are common characteristics that made this meeting possible. In particular, is a rock formation on the bottom. We still don’t know much about the behavior of octopuses. More research is needed to determine that these actions could mean,” notes Stephanie of Chancellor from the University of Illinois at Chicago.

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