The International Group for Historic Aircr...  ...nd. According to TIGHAR researchers, the sonar image shows a strong return from a narrow object...  ...ially got our attention is that there is no other sonar return like it in the entire body of data collect...

Photo: L. Sanchis et al The rings...  ...to the eye, but it does make it undetectable to sonar : José Sánchez-Dehe...

Why do whales beach themselves? A new study may ha...  ...e rapidly, possibly after being startled by naval sonar .The report could help scientists understand why b...  ...vulnerable to the potentially harmful effects of sonar than other marine mammals.Together with other stu...  ...regulators think of how navie...