Marine fisheries of India has been witnessed with substantial increase of fishing effort and fishing efficiency during the last five decades which resulted in overexploitation of fish stocks together with the increase of fossil fuel burning and CO2 emission into the atmosphere. The present study covered three important fishing harbours of Kerala to reveal an estimation of CO2 footprint (considering the emission of CO2 only during the fishing operation) by the mechanised fishing trawlers which showed a considerable higher value than the previous studies. There is a huge scope to reduce the level of CO2 emission by implementing proper scientific policies and also by improving fuel efficiency of marine fishing vessels. | A recent overview of CO2 footprint by the mechanised fishing trawlers of Kerala India