World A huge iceberg dumped nearly 1 trillion tons of freshwater in the ocean. The effects could be massive January 23, 2022January 25, 2022 Jordan Mendoza, USA TODAY Comments Off on A huge iceberg dumped nearly 1 trillion tons of freshwater in the ocean. The effects could be massive The A68A iceberg was the biggest iceberg on Earth when it broke off. Now gone, it has dumped nearly 1 trillion tons of water into the ocean.