The reason why they know about it at all is because it was tracked using military equipment designed to track potential threats in the air. They know the trajectory of the fireball with very high accuracy and they can model where exactly it impacted the ocean.

Right, but they had the exact coordinates of that F-35 that fell off the carrier into the Med, which is a far shallower sea, and it still took weeks to find it.

I'd like to see them succeed, but it's just too unlikely they will find anything. Might get a few detailed undersea maps out of the effort though, but that's about it.

It's still going to be a pretty big chunk of seafloor, right?

High accuracy is 100s of kilometers in this case?

And there I was thinking we were talking about a space mission and not that money grab of trying to find asteroid rock pieces somewhere on the ocean floor...