The naming contest for the National Zoo’s new octopus has at last come to a close, and the already popular cephalopod has been officially dubbed ‘Octavius.’ Zoo fans chose from a set of four possible names, including Olympus, Ceph, and Vancouver, but Octavius was ultimately the winner. Zoo officials announced the name via the Octopus Cam shortly after 2 p.m. on Wednesday. We dig the choice. Here’s how the Zoo described the rationale behind…