I suppose everything goes back to nature in the end. Sometimes the end is a very long way off, but since nothing is eternal, it must happen. Is it degradation you are illustrating, or is it the sea dragging at the boat and claiming it back? Whichever, both are enormously strong forces.
The nature is strong and wants it back...? This title seems really abstract to me. Nature would reclaim a fiberglass boat? Sorry that I don't get. The shot is okay, good focus, light and color. I think you could looked for something with a better composition and not so abstract meaning of strong/strength. True the rope is strong and yes, it's holding the boat but without seeing the rest of the scene we are left to guess. Just my 2cents. Good luck in the challenge.