Nautilus

The Nautilus (Nautilus pompilius) is a type of cephalopod and one of the earliest life forms on earth, dating back to 400 million years, lives off the coast of Trincomalee Sri Lanka. Only 4 species have been found around the world. It is indeed an amazing creature which uses it's almost geometrically perfect shell to regulate flotation by controlling chambers filled with air in a manner very much like a diver using a BCD. Floats to shallower waters during the night to feed and mate.

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