Mark Alan Cohen, 55, of Palm Beach Gardens was last seen May 30, 2011. He is believed to have left his home that day on his 23-foot boat Good Enough, which was docked behind his residence. That same evening the boat washed ashore on Singer Island, just south of John D. MacArthur Beach State Park; the ignition was on and the throttle was in neutral, but Cohen was not aboard.

At the time he disappeared Cohen was reported to be under significant personal strain — financial and marital problems and depression. On the day he vanished he reportedly sent his wife an email with the subject line Letting go, a detail that contributed to authorities classifying him as endangered.

The case remains unsolved and Cohen has not been located. If anyone saw Mark Cohen, his boat Good Enough, or activity on Singer Island around May 30, 2011, please come forward with information.