Paper nautiluses, also called argonauts, secrete the shells to serve as cases for their eggs—but it has recently been discovered that they also function as air-trapping ballast tanks, which allow the cephalopods to hang effortlessly in the water column without sinking. This is the only species known to use surface air bubbles to effectively control the animals’ buoyancy.

Paper nautiluses, also called argonauts, secrete the shells to serve as cases for their eggs—but it has recently been discovered that they also function as air-trapping ballast tanks, which allow the cephalopods to hang effortlessly in the water column without sinking. This is the only species known to use surface air bubbles to effectively control the animals’ buoyancy.


Dec 16th 2011 · 166 notes · Tags: #Nautilus #Underwater #Paper Nautilus #Ocean
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    Oh shit O___O Now next time we’re paralyzed out in open ocean we’ll have 2 different kinds of judgmental stares floating...
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    x_______x oh my god…Nolan…there’s more than ONE Nautilus out there…. T___T Which means our chances of encountering a...
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