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1) The largest animals to have ever lived on Earth, blue whales can grow to over 30m long and weigh more than 130,000kg – that's longer than three buses and ... The heart of an adult blue whale is the largest of any mammal. A blue whale's heart can weigh up to 1,300 pounds and is the size of a ... The whale shark is the largest fish in the world and the largest fish known to have lived on this planet. Because of its size and cartilaginous skeleton, it ... As the second-largest animal on the planet, fin whales (Balaenoptera physalus) are truly impressive creatures. Males can reach up to 82 feet long and weigh ... ... largest international catalogs of photo-identified humpback and finback whales. The current iteration of Allied Whale encompasses the ... A new study refutes previous calculations that argued an extinct whale was nearly twice as large as modern giants. The blue whale is the largest animal that ever lived (yes, including dinosaurs). A blue whale can grow up to 100 feet long and weigh up to 200 tons. Humpback whales and other baleen whales are the largest creatures on Earth, yet they eat some of the smallest prey in the oceans. Did you know? Whales are among the largest animals on Earth An adult blue whale can reach the impressive size of 33 elephants together! ... National Marine Aquarium in Plymouth, the UK's National Aquarium, home of the Ocean Conservation Trust & a top family day out in Devon.