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	- A nautilus shell viewed from above , and from underneath (en)
 
	- Left: Frequency distribution of N. pompilius shell diameter at Osprey Reef, part of the Coral Sea Islands, based on  2067 captured individuals. Shells ranged in size from 76 to 145 mm, with a mean of 128.6±28.01 mm. (en)
 
	- Right: Shell diameter of mature male and female N. pompilius caught at Osprey Reef. Males  had a mean shell diameter of 131.9±2.6 mm, compared to 118.9±7.5 mm in females . The Osprey Reef N. pompilius population is the second smallest known in terms of mean shell diameter, after the dwarf form from the Sulu Sea . (en)
 
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