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Noise pollution in the ocean is increasingly recognized as harmful to marine mammals, but very few studies have attempted to answer the question, 'How do you measure hearing in ocean invertebrates?' A new study has examined behavioral responses to sound by cuttlefish, a type of shell-less mollusk related to squid and octopi. The study is the first to identify the acoustic range and minimum sound sensitivity in these animals. These findings can help decision makers and environmental managers better understand the impacts of noise in the ocean. [Source: Woods Hole Oceanographic Institute]
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