Any ideas what this could be?

[dirtfishinMS]

About 8" down. Any ideas? https://imgur.com/gallery/l4BOJ

 

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[Tpmetal]

About 8" down. Any ideas? https://imgur.com/gallery/l4BOJ

Kinda looks like an old lead whistle

 

[coloradocav1]

Not lead if it's rusted

 

[Megalodon]

Looks like a whistle to me.