
pleurothallis: Nautilus pompilius
The shell of the nautilus is comprised of many individual chambers. Each chamber is individually sealed and contains an amount of gas. This provides the animal with buoyancy. The nautilus can regulate its density by injecting or removing fluid into these chambers through a system of tubes.
(Source: labellum)
yay nautiluses I have a tattoo of one
Always wanted to catch...this rare creature whenever I’m out at sea.