Assertion: kelp's diet | /r/CapableOf | show a 17.88 mm shell length
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Source sentences:
text: A total of 24.09 mm shell length and 27.01 g body weight per annum were recorded with a fresh seaweed diet as compared to the commercial diet, which showed a 17.88 mm shell length and a 16.79 g body weight increase per annum.