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HearingJust because you can't see any ears on a shark doesn't mean it can't hear. In fact, a shark can hear sounds up to 0.6 miles away—about the length of ten football fields. Sharks are particularly sensitive to the irregular, low-frequency sounds made by a sick or wounded fish, and prey in this state is an easy target. (back to diagram) Cocos Island | Sharkmasters | World of Sharks | Dispatches E-mail | Resources | Site Map | Sharks Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule | About NOVA Watch NOVAs online | Teachers | Site Map | Shop | Search | To Print PBS Online | NOVA Online | WGBH © | Updated June 2002 |