Laboratory experiments were conducted in a wind-wave tank to study the turbulence characteristics in the air and wave boundary layers generated by wind and waves. The turbulent air boundary layer over the water surface was surveyed using two hot-wire probes. It was found to be a good simulation of an atmospheric boundary layer over a body of water. Capacitance probes were used to record the wave height. Spectra, wave phase velocity, dominant wavelength and frequency, and other statistics of the wind waves were computed. The water boundary layer below the water surface was surveyed using an array of 10 cross-element hot-film probes to measure the streamwide and vertical components of velocity. Various turbulence statistics including mean velocity, root-mean-square velocity fluctuations. Reynolds stress, dissipation rate, spectra, and higher-order statistics were computed. Similarity profiles were found for the mean subsurface current and the rms turbulent fluctuations in the streamwise and vertical directions. The velocity spectra indicated the relative importance of the wave-induced motion, which attenuated exponentially with depth.