[Theoria]

Thanks. Nothing would surprise me if found in a shark. I read once where a shark was cut open and a cannonball was found.

[txhurl]

Cannonballs, license plates, tire rims.. who knows what sub-surface eddies might uncover under the sand.

The affinity for metallic objects might well be part of a migration and magnetic pole thing.

[wxgesr]

old tires too