There was rumor that the plane was floating or barely submerged for a while. I run fishing charters every Saturday and observed no closure area the morning following the crash.
My guess is that it followed the tradewind swells and current to another location about 7 NM away where those photos were made.
This week we have had a closure area for 3nm surrounding the impact site, supposed to remain thru July 30....but the only enforced closure area is about 7nm to the West in about 500’ of water near Electric Beach / Campbell Industrial Park offshore. I know because this Saturday I was escorted out of the closed zone and informed that this is a “closure for dive operations.”
Also possibly corresponding is the Navy Research vessel Commando, and an unnamed submarine in the area with a DSRV on its back. Both are sitting off Electric Beach fully visible from shore in the daylight.
Just a guess but I think it floated for a while and found bottom off the West side of Oahu. Possibly not either - but nobody is guarding the waters off the crash site.