SeaWiFS (Sea-Viewing Wide Field-of-View Sensor) was a satellite-borne sensor designed to collect global ocean biological data. Active from September 1997 to December 2010, its primary mission was to quantify chlorophyll produced by marine phytoplankton (microscopic plants). Many of the objectives have been continued with other projects, such as the Terra MODIS, Aqua MODIS, Sentinel-3, and PACE mission.