HMAS Sydney has been linked to the deaths of two whales after berthing in San Diego. The death of two whales, a 20m one and an 8m, have been linked to the HMAS Sydney. Photo: Screenshot / ABC In a statement to the ABC, the Australian Department of Defence confirmed that "as HMAS Sydney was berthing alongside Naval Base San Diego in California two deceased whales dislodged from her hull beneath the surface". The department said the Australian and US navies were cooperating with local marine authorities and other agencies to review the incident. "The navy takes marine mammal safety seriously and is disheartened this incident occurred," a Defence spokesperson said.