This is mesmerizing, an octopus that has crawled into a sea coconut and walks on two of its legs, looking for all the world " like Wile E Coyote pretending to be a shrub," as Boingboing points out. I've watched it 10 times and it does not get old.
UPDATE: Neither does this video of a running vampire bat, also from Boingboing.
UPDATE 2: OK, it's not that the octopus crawled into a coconut, it's pretending to be one. Whatever that means.