Original Bob had never been much of a swimmer, preferring to keep water in bathtubs and, in extreme situations, hot tubs. But this was different—more like flying. The big difference seemed to be the complete lack of any concern about drowning. Of course, in a manny, breathing wasn’t a problem anyway, but the Poseidon dolphins actually were fish, so they absorbed oxygen from the water using something like gills. Interestingly, they could also absorb oxygen from the air while floating at the surface, by pumping air slowly through their swim bladder. So holding one’s breath would never be an issue. It was kind of a best-of-both-worlds thing. The resemblance to Earth dolphins was remarkable, though. The domed heads and beaked mouths could fool you into thinking you were dealing with Earth stock, until you spotted the vertical tail flukes.