A nautilus swims using jet propulsion! it expels water from its mantle cavity through a siphon located near its head, adjusting the direction of the siphon to swim forward, backward or sideways.
To control its buoyancy, a nautilus pumps fluids in and out its shell chambers, which are connected by tubes called "siphuncles."
check our our animal guide page for more: http://mbayaq.co/1Ov5Q6V
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