The body of a dead sperm whale that washed up on a California beach last week was covered in graffiti spelling out the name of a Bay Area motorcycle gang. The 50-foot whale was still on the Pacifica State Beach on Wednesday after washing up on the sand the week before. Before the tide came in, beachgoers took photos of where 'East Bay Rats Motorcycle Club' was  on the whale. Scroll down for video . The body of the 50-foot whale was tagged after it washed up on Pacifica State Beach in California last week . It's unclear how the whale died but it doesn't appear to have broken bones or signs of blunt force trauma . The name was erased by Wednesday's high tide, NBC Bay Area reported. The club did not respond to a request for comment. It is unknown how the whale died but it does not appear to have any broken bones or show signs of blunt force trauma. The results of an autopsy are pending. The body might be burned or dragged out to sea. A man who took pictures of the whale, Alan Grinberg, said: 'The East Bay Rats Motorcycle Club, or whoever did this, stinks more than this whale's rotting flesh.'
50-foot whale washed up on Pacifica State Beach in California last week .
It was sprayed with name of East Bay Rats Motorcycle Club at some point .
It is unknown how the whale died and results of an autopsy are pending .
Witness said 'Whoever did this, stinks more than  whale's rotting flesh'