Are these fossils? Can anyone identify?

[OnDiWave]

Hey I found these on beach in SC, can anyone identify if they are fossils or something else?
Thank you!! 🤗

 

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[smokeythecat]

About half are fossils. Only keep the ones with a definitive form. The grey ones in the third picture are small corals.

 

[OnDiWave]

Awesome! Any idea of what they belong to?

 

[smokeythecat]

I'm looking at snails and corals.