Five incredible facts about the paper nautilus

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Mycena Chlorophos

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2. The shell The shell is actually an egg incubator. Females make it themselves by secreting a form of calcium, creating a paper-like shell (hence the name, paper nautilus).

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3. Life in the water column Paper nautiluses live in the water column, just like real natilusus do, but unlike other octopuses, that live on the ocean floor.

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4. Size disproportion Male paper nautilus are less than 2.5cm long, while females grow to more than 37cm. Females are also 600 times heavier than the males.

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5. Losing limbs When the male and female mate, the male leaves behind an arm!

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