Nopoli rock climbing gobies climb hundreds of meters up Hawaiian Falls

The Nopoli rock-climbing goby, no bigger than a few centimeters,scales hundred-meter-tall Hawaiian waterfalls,inching its way up by alternately attaching the suction cups on its mouth and pelvic fins.To find water while on land, the mummichog,like most amphibious fishes, is on the lookout for reflective surfaces.Other species, like mosquitofish,exercise their inner ear to determine where they’re oriented on a slope,relying on the probability that they’ll find water by moving downhill.