Upon recovery: Found water throughout the entire glider. Aft leak appeared dry and no signs of water or salt in the aft cap. No signs of water or salt on the upper inside of FIRe sensor. 2 small puddles in the bottom of the FIRe sensor. Leak appears to be from the fore section. Approximately 1/2 cup of water drained out. Fore leak detect sensor soaked. Diagnosis: pump diaphragm failure.