Been doing some Tomnod searching...it looks a lot like a wave/whitecap formation to me. I wonder if they have a time lapse series of it that would rule out a whitecap.
But the Orion P3 is getting pingbacks, so it must be more than water. It could be a seal, a porpoise, a large fish such as a tuna, a whale or a shipping container. From our discussion, a 777 part would likely have sunk, so I'm from Missouri on that theory.