Global commercial fishing activity for 2020 fell by around 1 million hours as of end-April, a 6.5% decline over the two previous years, the result of plummeting demand caused by coronavirus lockdowns, according to Global Fishing Watch.Fishing fleets spent 14.4 million hours on the water for the year so far to April 28, a decline from an average of 15.4 million hours for the same year-to-date periods of 2018 and 2019, according to the nonprofit organization that tracks fishing operation worldwide.Global Fishing Watch collects and analyses data from onboard identification systems known as AIS…