Spirula spirula, commonly known as the Ram's-horn squid, is a deep water cephalopod. They are rare to see alive, however, their internal spiral shells can commonly be found on beaches. They are small (about 45 mm) and have a photophore on the end of their mantle.
Adult S. spirula
S. spirula shells on beach.
Info at:
Spirula spirula
Adult S. spirula
S. spirula shells on beach.
Info at:
Spirula spirula