Who is the strongest animal in the ocean?

In rivers, the crocodile has the strongest jaws since its jaw is strong enough to grab a 1 tonned water buffalo and drown it. Saltwater crocodiles, especially can get as much as 2000 to 3000 pounds and be more than 20 ft long since they can live for more than a century! In oceans or seas, the whale is the strongest and largest animal ever known in water and earth! Whales can get as much as 60 ft to 100 ft long and weigh from 5 tons to 100 tons!!