Underwater Sub Detection: SBIR Tries to Think Like a Shark Posted 06-Jul-2005 05:10 DID has covered evolving US anti-submarine warfare strategy before, including the growing importance of dealing with super-quiet diesel-electric submarines in shallow-water littorals.In response, one of the early-stage Small Business Innovation Research (SBIR) approaches involves thinking entirely outside the sonar box. We talk about "submariner dolphins" - but maybe the creature they really need to emulate is the shark. Unlike dolphins, sharks don't use sonar. Instead, they rely on both an acute sense of smell and on jelly-filled canals that pick up on the tiny electrical charges a...