Building a city sounds like a concious activity. But then there is: > "Congregations such as these probably occur wherever shelter is limited to small patches

Building a city sounds like a concious activity. But then there is: > "Congregations such as these probably occur wherever shelter is limited to small patches of habitat, and food is plentiful," Scheel told Quartz. They don't decide to live nearby others, but there simply is no other place. The headline should be: Octopuses cannot live everywhere and may settle close to eachother if there is no other space available.