Abstract
IN NATURE of November 17 (p. 769), we quoted an interesting account of sounds heard in the East Indies by Capt. P. Jansen. We have received a letter from Dr. J. D. F. Hardenberg, of the Laboratory for Investigation of the Sea, Batavia, with reference to this note. He states that the comparison of these noises with the sounds made by foghorns is quite correct. They remind one also of the sounds made by motor traffic on a busy thoroughfare when heard at a distance of about a hundred yards. The noises, however, do not proceed from the earth, but are made by fishes of the genus Therapon, as described by Dr. Hardenberg in a recent paper (Zool. Anz., 108; 1934). The other sounds mentioned by Capt. Jansen have also been heard by Dr. Hardenberg, though less frequently, and once, when in the Java Sea, he heard sounds as if made by silver bells. Their origin is still unknown, but he supposes that they are also made by animals.
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Sounds made by Fishes in the East Indies. Nature 135, 426–427 (1935). https://doi.org/10.1038/135426d0
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DOI: https://doi.org/10.1038/135426d0