IRV
Unlimited funds, yes then full speed ahead on all fronts, limited funds,find the plane and ya don't need to know the life cycle of the reef to do that. ROV with the capability of grappling something, bringing it up, looking at it, analyzing it, etc. Asking is it man-made> Is it aircraft in origin, is it from an electra, etc Go back down and get another likely piece and repeat steps, etc