I found this bottle underwater near Whidbey Island Washington. I think it might be a ballast bottle but so far in my research I haven't been able to find anything that looks similar to it. It is green blown glass, no seams up the sides, numerous bubbles and irregular in shape. It is a little over 8 inches in length, 3 inches in diameter and holds 16 ounces of water. Any information would be greatly appreciated.