Octlantis: Scientists Find Underwater City Built by Octopuses
19 Septembre, 2017, 15:33 | Author: Come Portier
The Jervis Bay commune, set in the warm waters off the coast of New South Wales, is much like any other.
Scientists have discovered a congregation of some 15 common Sydney octopuses (also known as gloomy octopuses or octopus tetricus) dwelling together, communicating and even evicting each other from dens in a compact area on the bottom of Jervis Bay off the coast of Australia.
Alaska Pacific University lead researcher David Scheel discussing their social actions said: "These behaviours are the product of natural selection, and may be remarkably similar to vertebrate complex social behaviour. This suggests that when the right conditions occur, evolution may produce very similar outcomes in diverse groups of organisms", Scheel told Quartz. Named Octopolis, at the time of its discovery the site was considered an anomaly.
Scientists have discovered a small octopus city partially built out of clam shells strewn around a rocky outcrop about 10m (33ft) below the surface of the sea, and dubbed "Octlantis".
However, in "Oclantis" there is no human object or point of reference to explain the colony.
"At both sites there were features that we think may have made the congregation possible - namely several seafloor rock outcroppings dotting an otherwise flat and featureless area", says one of the team, Stephanie Chancellor from the University of IL at Chicago.
There's an abundance of food at the two sites but they're also attractive to predators, and from what the researchers have observed so far, Octlantis seems like a rather violent and aggressive place to live.
Original behaviour of octopus needs more study and researchers.
One possibility is that these types of octopus settlements have always been around, but we're only now getting the technology and tools to be able to monitor them. "More research is needed to determine that these actions could mean", notes Stephanie of Chancellor from the University of IL at Chicago.
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