#invert

I know there is very limited information - on the extremely beautiful and unique, Biscuit Starfish. I checked...but took the plunge anyways. I have had this handsome fellow...since July 2022. I do nothing special, to feed him. He shares my 190g DT - with a good variety of inverts, but...

I have this sea shell and I’m just curious about it and I have some questions: Does this come from an invertebrate or is it just a normal sea shell/ conch How much is it worth? Is it rare? Look at the imagines below.

I had has this sea shell for a while and I’ve just started to wonder what kind of sea shell is it because it looks like a sea snail shell also how rare it is? Look at the images below.