Discover 10 lesser-known facts about the blue whale, the largest animal on Earth. Learn about its diet, communication, ...

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How big they are: Up to 32 feet (9.8 meters) long How long they live: Up to 100 years, but usually around 25 to 50 years What they eat: Fish, seals, seabirds, squid, sharks, and even whales Orcas ...

They are found on every continent and in every ocean, and range in size from tiny bumblebee bats to enormous blue whales. One reason for their success is the way they move. Mammals as a group use ...

They are unrelated and possibly pregnant females that have become traveling companions, said Julie Albert, director of right whale sightings for Blue World Research Institute. Spotting right ...