Assertion: whale shark's size | /r/HasProperty | rare
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Source sentences:
text: In a review of size variation in marine megafauna, McClain and colleagues noted that the largest male listed by the International Whaling Commission was recorded as 24 metres (79 ft) in 1933 and supported this as the largest; they noted, however, that sizes like these are rare and 95% of recorded sperm whales are below 15 metres (49 ft).