Global Fishing Watch Heat Map Revealing Indonesian Government Fishing Vessel Data 1 (image) Global Fishing Watch Share Print E-Mail Caption Global Fishing Watch uses publicly broadcast AIS signals to track fishing vessels. On the Global Fishing Watch heat map, every lighted point represents a fishing vessel. The blue points are vessels detected through AIS. The green points represent nearly 5,000 additional vessels revealed through Indonesia's government Vessel Monitoring System. This data has never been made available to the public before now. Credit Global Fishing Watch / 2017 Usage Restrictions Must credit Global Fishing Watch Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.