Here's 2 more

[wbaltz]

Shells I need help identifying, please.

[wolfi]

Hi wbaltz,
sorry, but the pictures are very small........ . It's always helpful to have a picture of the aperture (the opening) of a shell. And it's helpful to have the origin (if possible) and the hight/width (inch or cm).
The specimen on the left side might be Cypraecassis rufa.
The specimen on the right side is not a mollusc, but a sea urchin.
Kind regards: wolf

[paul monfils]

Yes definitely Cypraecassis rufa on the left.

[wbaltz]

Thank you all, I'll repost with better pics, and a ruler to help.
Again, thank you very much!