Assertion: sperm whale | /r/CapableOf | exhibit extreme sexual dimorphism
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text: They exhibit extreme sexual dimorphism: Adult males (bulls) average 52 feet long (16 meters, but some exceed 60 feet or 18 meters) and 45 to 50 tons (46,000 -50,000 kilos); adult females are about 36 to 40 feet (11 m - 13m) and average about 15 tons (15,000 kilos).