Discover the blue whale, the biggest animal to ever live. Learn its size, diet, and surprising facts about this ocean giant.

Only two blue whale births have ever been recorded in human history, both decades ago. This remains an extraordinary mystery, given there used to be hundreds of thousands of blue whales before whaling ...

A blue whale calf with its mother near the coast of island Pico (Azores)© tane-mahuta/iStock / Getty Images Plus via Getty Images "The blue whale is the largest and loudest animal on Earth." The blue ...

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A 100-year-old equation and a fibre-optic cable off the coast of Svalbard led researchers to discover they could detect ...