Global Fishing Watch is a collaboration among SkyTruth, Oceana, and Google to map and measure fishing activity worldwide using data from the Automatic Identification System (AIS), a ship-tracking system used by large fishing vessels.

A map of this data is available to anyone with an internet connection and allows users to monitor when and where commercial fishing is occurring around the world. Governments can use this data to ensure fishing regulations are upheld, allowing them to respond to illegal fishing rapidly and efficiently.