RedactedNarrative: We were on patrol near the Courtney Campbell Causeway when we were approached by two individuals on a PWC that had mentioned that another PWC had hit an object in the water.  We followed the individuals to an object that was mostly submerged with a piece of it sticking out.  We later found out that the object was a free floating piece of wood with hard concrete on the end that was sticking out of the water.  We got the coordinates and notified Coast Guard to investigate the object.  After addressing the floating debris, we again followed the two individuals to another group of people that were closer to shore.  They stated that they were the ones who hit the object in the water.  One other PWC was involved with two other individuals.  Both people said they were cruising when they impacted the object and were ejected from the PWC.  Both were unharmed and both were wearing proper floatation devices.  After asking if they needed medical assistance, which they refused, I began to conduct an accident investigation.