What is this?

What is this?

Observation - What is this?. Description: Might be something that has been floating in the sea and got barnacles on it or it might be a marine creature, or part thereof, possible a much larger barnacle perhaps. At first looked like a piece of antler!

Might be something that has been floating in the sea and got barnacles on it or it might be a marine creature, or part thereof, possible a much larger barnacle perhaps. At first looked like a piece of antler!