The Hydraulics Laboratory contains two air-sea interaction facilities. The centerpiece of CAICE activities, a 33 m linear glass wave channel with a depth of 0.5 m has been utilized in understanding the properties of nascent sea spray through spontaneous breaking of wave packets. With generous support from the Scripps Inst. of Oceanography Director’s Office, this channel has been fully replaced in 2015 with updated electric drive for the wave-making paddle, allowing this system to be cleaner and more precise. The Wind Wave Channel, at 44.5 m long and a water depth of 2 m, allows for large-scale production of waves and aerosol. It is affixed with a wind generator allowing for the production of sea spray by wind shearing, and could be retrofitted for detailed sea spray composition studies in the future.