The Sound From Ships May Attract Unwanted Critters

Barnacle Hull House U.S. Navy via Flickr A ship at anchor isn't necessarily quiet. Many crews leave their generators on while at anchor, to power refrigerators or air conditioners. But maybe they should consider shutting down, if they can. The thrum of a ship's generator can attract sea squirt larvae from as far away as 500 meters, according to a new study. The little larvae are a big problem for ships. Sea squirts, barnacles, algae and other sea creatures that attach themselves permanently to b...