Spineless creature studied in DC swamp

Even though, "It is spineless. It lacks vision. It is an opportunistic feeder, consuming whatever resources are available...", its not what you think. 

Its name is Stygobromus hayi, the Hay's Spring amphipod. It is spineless. It lacks vision. It is an opportunistic feeder, consuming whatever resources are available -- perhaps including the remains of its own kind. That is where its similarities to some of Washington, D.C.'s more notorious megafauna end. And while this tiny creature has been the subject of scientific inquiry in recent years, researchers report on a way to survey it without threatening its existence, as other studies had done. The Hay's Spring amphipod lives in swampy areas called seepage springs where groundwater sometimes spills out onto the surface of Rock Creek Park, in Washington, D.C., its only known home in the world. Because it is so rare, and perhaps also because of its prestigious ZIP code and proximity to the National Zoo, this tiny crustacean is on the U.S. endangered species list...more