Scaphopods

Today I ran out of interesting gastropods I know of, so today I will be introducing scaphopods. Scaphopods (a.k.a. tusk shells) are a class that is made up of exclusively infernal organisms. As you may have gathered, their shells are shaped like tusks. Tusk shells live in soft substrates offshore (usually  in deeper waters) in all oceans. According to molecular data scaphlopods may be a sister group to cephalopods. Interestingly enough scaphopods' shells were used as a currency by the natives of the pacific northwest.

Scaphlopod Shells:

Scaphlopod Without Shell: