Photo by psyberartist It’s well known that boats are an affliction for manatees. Practically all of the endangered sea cows bear scars from boat propellers, which are notorious for being a number one killer of manatees. So why don’t they get out of the way of the boats when they hear them coming? The simple answer is that they can’t hear the low frequency sounds made by the boats. A few years ago, we reported that some researchers were working on discovering more about the hearing abilities of manate… Read the full story on TreeHugger
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High-Pitched Boat Alarm Could be Life-Saving for Endangered Manatees
