The Beachhound (Harold Lloyd) is resting buried in sand on the beach. He is disturbed by the Life Guard ('Snub' Pollard) and his bevy of beauties. The Beachhound gets chased off the beach, but he returns after stealing a Life Guard uniform. Soon, he's called into action. Chaos ensues.
It's a Harold Lloyd silent comedy short. He's a bit of a prankster. He has his Harold Lloyd charms. It's a bit of nonsense fun. This page says it's five minutes. I saw it on TCM and it's ten minutes long. I don't know if there is an edited shorter version. Films of that era can be cut up to fit their venues. I don't know why the Sea Waves are Sad. Is that alluding to something in the culture? I would also want something before he got buried in the sand in his suit with another guy. Maybe he fell asleep after a night of drinking. There's a funny bit there and the other guy would be even funnier if he's set up better. The changing of the signs is pure chaos and fair fun. It's also nonsense and that's this short.