Another Sea of Cortez mystery

We found these all over. I am assuming some sort of mollusc? Full ones were a dull purple in colour, empty, white like these. The individual "cases" were about one inch long.

Any clues out there?

Cheers,

Marli

Yup, mollusc, possibly a whelk.

They have a strong resemblance to Murex egg cases I have seen photos of; perhaps that's what they are...

Thanks, Leslie.

Hi,

Can you put more pics please ?

Unfortunately, this is it.

Cheers,

Marli