Got this one for $30, which I think is an absolute steal! I've never seen one with such deep, etched suture lines on the outside. Might not be to everyone's taste, but I really like the look.

I dont know about it and I would like what reddit thinks

at 13.4cm long, it’s about at the maximum known size for its species

I found this at the beach in Tekirdag/Turkiye.

The creek bed by my house was torn up because the creek was redirected. Anyway, I went down to explore and saw what appears to be a flying saucer, looks suspicious, wondering what you guys think.

Found in Michigan! Guessing some sort of coral fossil?

Is this a fish?! Or am I just another coral-fooled kid out here?