Cormacs Coast on Nostr: This is the internal shell from a Ram's horn squid (Spirula spirula). Like ancient ...

This is the internal shell from a Ram's horn squid (Spirula spirula). Like ancient Goniatites, Ammonites and Belemnites they use this gas filled structure to help them maintain their position in the water column. While they are a deep water species when they decompose their shells float and often drift ashore.
Canary islands, Spain.