By the Sad Sea Waves
- Año: 1917
- País: United States of America
- Género: Comedia
- Estudio: Rolin Films
- Palabra clave: rescue from drowning, silent film
- Director: Alfred J. Goulding
- Emitir: Harold Lloyd, Harry 'Snub' Pollard, Bebe Daniels, Frank Alexander, William Blaisdell, Sammy Brooks