Green Sea Turtle (Chelonia mydas) resting on the fantail of the YO-257
 
  A century of maritime history, military occupation and artificial reefing has left Oahu's sea floor generously sprinkled with metallic relics from the past.  I don't pretend to know much about these submerged artifacts, but if you dive Oahu enough, you're bound to stumble across some form of interesting man-made litter.  For whatever reason (aligned stars, voodoo, or just dumb luck) this past month has been especially ri...
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