I'll have to go deeper into my archives for more 'water-activity' shots for the pith of this thread but maybe, just maybe this recent photo may apply by being water related.
Although, it appears more like photo-shooting activity then water activity from the posing ladies who are busy fixing their wind-swept hair for a nice photo...
Taken in Istanbul Port on 29 May 2010, during
The Historical Seas-Tall Ships Regatta.
Dar Mlodziezy (Poland) in the far back;
Kri Dewaruci (Indonesia) in the front.
Edit: Fixed the horizon in the photo.