These items were about 10 feet apart on the beach north of Marineland, FL area. have no idea what they could be. One has a sharp nail/small spike embedded in it.
I am very new at this so I apologize in advance if I'm stupid. Still learning thread etiquette.
While those have all that accretion on them it is almost impossible to tell what is underneath. A trip through an electrolysis tank or if you are a bit more aggressive a wire brush would answer a lot of questions.