Ram's horn shell and reflection
Spirula spirula is a type of cephalopod related to squid and cuttlefish. It is not closely related to Nautilus or extinct ammonites. The structure is an internal and stores gas and acts as a buoyancy compensation device.
Live Spirula live in deepwater in the tropics. When they die their shells float to the surface. Ocean currents distribute them widely. This one was found at Jervis Bay on southeastern coast of Australia.
For more information see en.wikipedia.org/wiki/Spirula
Ram's horn shell and reflection
Spirula spirula is a type of cephalopod related to squid and cuttlefish. It is not closely related to Nautilus or extinct ammonites. The structure is an internal and stores gas and acts as a buoyancy compensation device.
Live Spirula live in deepwater in the tropics. When they die their shells float to the surface. Ocean currents distribute them widely. This one was found at Jervis Bay on southeastern coast of Australia.
For more information see en.wikipedia.org/wiki/Spirula