Whale shark swims 20,000 km in 500 days in record migration
A whale shark, the world's largest living fish, has been tracked moving 20,142 km across the Pacific in the longest whale shark migration route ever recorded. Within 510 days, the GPS-tagged shark travelled from a Panama island to the Mariana Trench in west Pacific which contains the deepest point on Earth. The study was done by Smithsonian Tropical Research Institute.