A number of posts trying to find alternative explanations, many without due regard to the photographic evidence posted earlier in the thread, the basic laws of physics and how one should fly a modern jet aircraft.
Not in any particular order, no blame or insult is intended:
Vertical dive into sea.
A.Take an empty drink can and with the can on its base stamp on it.
B. Take another empty can lay it on its side and stamp on it.
Do the fusalage photos look like a or b?
Answer b. Therefore it can be infered that the plane hit the sea more or less horizontally.
Ditching.
You do not lose speed by banking the aircraft.
Ditching configuration varies acording to aircraft type but for all aircraft one should land parallel to the swell line with some degree of nose up attitude and wing level.
The time frame available is usually short enough that getting this right is very difficult.
C. Take yet another empty drinks can and scrape it horizontally along some rough concrete. (The sea will be as friendly to an aircraft).
Does the can look anything like the photos? Answer no. Inferance is therefore ditching very unlikely.
Please dispose of your cans in an environmentally friendly manner.