By the Sad Sea Waves
- An: 1917
- Țară: United States of America
- Gen: Comedie
- Studio: Rolin Films
- Cuvânt cheie: rescue from drowning, silent film
- Director: Alfred J. Goulding
- Distribuție: Harold Lloyd, Harry 'Snub' Pollard, Bebe Daniels, Frank Alexander, William Blaisdell, Sammy Brooks