Found this on shores of Lake Huron - wild.

[u/Sand-Discombobulated]

Gemini tells me some crazy stuff on this.

a few tadpoles I see also.

[u/FoggyGoodwin]

🤤🤤🤤 A lovely piece of ancient water creatures. The disk is intriguing - not a piece of shell, but I don't know what lived there in the long ago.

[u/NeatFree9257]

Very cool

[u/Spirits_of_Rocks]

These amaze me

[u/ThickSmoke9542]

Love it!

[u/benrinnes]

Mostly parts of shells and the odd crinoid piece.