In the video when the camera first picks up the "wire or rope", deeper down on the cliff face right on the edge of the light field there appears to be what could be more debris.
Also, in looking at the "wire" in the video, without some sort of scale to estimate diameter the best we can do is guess as to what it may be. I realize that alot of folks think the wire is from a tire, but just how likely is a tire to be shredded like that by sea action? Tires are very hard to tear apart unless it was done manually.
If AE/FN ended up there, and what we think we see is what we think it could be, it was once attached to the airplane under the engine. Could the wire be the remains of a flexable duct that maybe was part of the engine accessory section? The ducting of which I speak is treated canvas with a spiral wire inside, if you have ever cut any of this type ducting it would make a piece of wire very much like what appears in the film.
I had the opportunity one time to help out doing some work on a B-25. Inside the nacelles there were several flexable ducts like that, could the Electra had had simular ductwork?
Gums