RedactedNarrative: Both PWCs were operating behind another boat with family members aboard.  The PWCS were jumping the wake from the third vessel.  During the course of this activity, both jet skis turned and unknowingly were on a collision course, but could not see each other due to the height of the wake between them.  Vessel 2 collided with Vessel 1 causing both Operators to be ejected from the PWCs.  Vessel 2 Operator was able to get back on, but Vessel 1 Operator was injured in his pelvis.