Good video of 53 making a PEL in California. I would guess to land on a beach that it had to be a main transmission emergency, tail rotor problem or they were re-making Baywatch.
http://www.csmonitor.com/USA/2015/0...opter-makes-emergency-landing-on-Calif.-beach
http://www.csmonitor.com/USA/2015/0...opter-makes-emergency-landing-on-Calif.-beach