PhD candidates from the Empowerment Informatics program at Japan’s Tsukuba University Aisen Carolina Chacin and Takeshi Ozu have developed a haptic sonar glove that allows the wearer to feel objects underwater that are just out of their reach. The IrukaTact glove uses echolocation to detect underwater objects using pulsing micro-jets of water that generate haptic feedback. The design pulls water in from its surrounding area and directs the jets of water on the wearer's fingers, water jets will increase in strength the closer that the glove get’s to the object, and weaken if the glove moves away from the object. Divers could potentially use the gloves to search for objects on the ocean floor in low-light conditions and rescue teams could use them to search for survivors in flood conditions. You can read more about the IrukaTact glove over on 3DPrint.com: http://3dprint.com/113134/3d-printed-sonar-glove/