How much of the ocean have we explored? https://oceanservice.noaa.gov/facts/exploration.html https://oceanservice.noaa.gov/facts/exploration.html > Currently,

How much of the ocean have we explored? https://oceanservice.noaa.gov/facts/exploration.html https://oceanservice.noaa.gov/facts/exploration.html > Currently, less than ten percent of the global ocean is mapped using modern sonar technology. For the ocean and coastal waters of the United States, only about 35 percent has been mapped with modern methods. There is global effort to map all oceans by 2030