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Helping A Cowcod Swim Back Home

A common problem for fisheries is by-catch, or fish caught unintentionally that commonly perish and contribute to global fishery decline. For deep-swimming fish, being pulled to the surface can result in barotrauma, a pressure-related injury that prevents a fish from being able to swim back down to its natural habitat. In this video, researchers from NOAA successfully tag and return a barotrauma-bloated cowcod to depth using a pressure-sensitive device with noninvasive locking jaws called the SeaQualizer. The jaws pop open at 55m down, letting the fish go. Such a device may help manage global by-catch. [CREDIT: N. Wegner and J. Hyde/NOAA] Science (www.sciencemag.org) is the world's leading journal of original scientific research, global news, and commentary. For more original videos, check out the Science Video Portal (video.sciencemag.org).