Dakota,
Your last picture looks like an underwater power cable. Many places they are on the bottom with a slight mound of dirt covering them. In various places along the cable it looks like the cables are exposed. I don't know if it is how it was laid or if the cable has been exposed by the current, but it makes the cable appear for stretches and then disappear again.
Just my guess,
Jim
Last edited by Jim; 06-02-2014 at 12:46 PM.
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