Report: Mega Iceberg Melting Dumps 152 Billion Tons of Water Into Ocean, Could Have ‘Devastating’ Effects on Environment Posted byEmily Rella January 25, 2022 Leave a comment on Report: Mega Iceberg Melting Dumps 152 Billion Tons of Water Into Ocean, Could Have ‘Devastating’ Effects on Environment The A68A iceberg was once the largest iceberg on Earth.