Assertion: sperm whale's click | /r/HasProperty | measured at 230 db.
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Source sentences:
text: While its calls are claimed to be louder than a jet engine at take-off, clocking in at an impressive 188 decibels (dB), the sperm whale is actually louder: its communicative clicks have been measured at 230 dB.
text: Their clicks have been measured at 230 dB.