Navigational buoy.

A navigational buoy spotted in Key West on July 16, 2012.

 

I assume that the thing that looks like a spray can on top is a solar powered light signal, but what about the "antennas" to keep seagulls away or for transmitting its postion in case the buoy get lose after a hurricane...?

 

Anyone who can shed some light on this? George..?

Done