Add Yahoo as a preferred source to see more of our stories on Google. Nothing in Earth’s history compares to the blue whale. This ocean giant outweighs dinosaurs and stretches longer than most buses.

Blue whales are the most massive animals to exist in the history of animals. Dreadnoughtus and those other thundering, 60-ton dinosaurs? Bantamweights next to one of today’s 100-ton Balaenoptera ...