AMEE (Creelock 34 from Anacortes, P42 from Mukilteo, C&C 27 and Freedom 32 from Everett) fleet was in its sixth week cruising the Discovery Islands when the aft head stopped working. The pump would not bring in sea water for flushing. We limped along in our seventh week using the forward head until we arrived back home. Yesterday, I disconnected the incoming raw water line from the head pump in order to connect a city water hose so that I could lear the line. Judging by the stench I suspect a small critter (fish) found a new home in our through hull and died. After clearing the line and hooking everything together the aft head now works like new. It could have been a whole lot worse.Terry