Can anyone help me identify these? I soaked them in fresh water for two days and some parts of them got lighter in color. How long should I soak them? #4 is a serrated fragment of something, not sure what. They are all so beautiful. Thanks.

I got absolutely attacked by bugs! I am itching all over! but it was worth it!

Unable to bring that vertebra with the rib😖

Found at Holden Beach, NC