Correct Answer :   International Quiet Ocean Experiment
                                                    
                                                                                                        The International Quiet Ocean Experiment was originally formed in 2011 to create a time series of measurements of ambient sound in different ocean locations.
Recently, a team of scientists from the International Quiet Ocean Experiment (IQOE), have been undertaking experiments to understand and measure the impact of the reduction in ambient human activity due to the Covid-19 lockdown, in oceans.