Lost Tropics is the debut studio album by Australian rock band Ocean Alley, released on 13 May 2016.

Brian Winters from The Pier said "Lost Tropics, The band's first full-length rides on the heels of two successful, jam-packed EPs Yellow Mellow (2013) and In Purple (2015).

Lost Tropics is Ocean Alley's effort to combine the raw, upbeat energy of Yellow Mellow with the dark, tantalizing sounds from In Purple.

"[6] Rolling Stone Magazine said "While the core of Ocean Alley's sun-soaked psych-reggae roots remain, Lost Tropics is a bold statement of confidence.

Ocean Alley craft a uniquely unforced balance between their unrestrained rock fusion and a pop directness"[7]