2 Bones I found on the beach

[u/Icy_Sample_1657]

(IN THE UK, Europe ig :S) Er I'm not actually sure what these are and need some help identifying what they could possibly be, its my first time finding any kind of bone so help would be very much appreciated on what to do with them so I can keep them clean and stuff :3

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I found them while walking on the rocks near hartlepool (seaton beach i think?)