The Navy did not follow beach closure advisories, exposing Navy SEAL candidates and possibly affecting training, a government watchdog found.

Water contamination has been a long-standing issue in Coronado due in part to pollution from the Tijuana River Valley in Mexico, which flows to area beaches and causes significant closures to the shoreline.

Last year, while Coronado’s beaches were largely closed due to the ongoing Tijuana sewage crisis, the U.S. Navy SEALs kept training. Leaders say they will develop protocol for relocating, rescheduling,