This very cool video from Wired sheds some light on the plight of the mantis shrimp, which has to physically fight other members of its kind for housing because the evil landlords (researchers at Duke University) are only constructing a limited number of luxury rental units (putting them in cages with only one shelter) out of unmitigated gentrification-fueled greed (so they can watch them fight, for science). The struggle of the mantis shrimp is truly heart-wrenching. And they just closed down that bar the mantis shrimp likes.
They also do this in the wild, apparently.
· Feisty Mantis Shrimp Go Mike Tyson on Each Other for Houses [Wired]