From the Lion Air website (my bolding):-
Fleet
last update
Current:
4x 737-400, 16x737-800, 68x 737-900ER, 2x MD-90, 2x 747-400 (one 737-800 lost on Bali during ditching) 13/Apr/13
A ditching would suggest intentionally putting it down on water.
I think this would be more accurately described as a crash as most pilots tend not to "ditch" fully serviceable aircraft!