Another good day at the beach! 1955 wheat penny, cuban 10 centavo coin,Couple stainless rings and one silver 925 ring- cz earring , sterling earring -- and about 5$ in change --while huntin also found a few shell tools to boot!!
They are from a conch shell! They are all different ages but each has been cut or ground or modified in different ways to be used as a drill of some sort most likely at least that's what it looks like. In the keys just about anywhere you find that has actual native soil of some type has some sort of broken or whole tools like these. They almost all look identical! So far these types of "drills" are the only shell tools I've found but not out of the question to stumble upon a Celt perhaps?!!