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The blue whale is the largest animal known ever to have existed. [42] [43] [44] Some studies have estimated that certain shastasaurid ichthyosaurs and the ancient whale Perucetus could have rivalled the blue whale in size, with Perucetus also being heavier than the blue whale with a mean weight of 180 t (180 long tons; 200 short tons).
The largest known species of fluke is Fasciolopsis buski, which most often attacks humans and livestock. One of these flukes can be up to 7.5 cm (3.0 in) long and 2 cm (0.79 in) thick. [236] Tapeworms The largest known species of tapeworm is the whale tapeworm, Polygonoporus giganticus, which can grow to over 30 m (98 ft). [237] [238]
Rorquals are the largest group of baleen whales, with eleven species in three genera. They include the largest animal that has ever lived, the blue whale . They take their name from a Norwegian word meaning "furrow whale"; all members of the family have a series of longitudinal folds of skin running from below the mouth back to the navel ...
The blue whale (Balaenoptera musculus) is the largest cetacean on the planet. While some have claimed that there were dinosaurs that topped its size, there is no scientific data to support that ...
At 8 kilometres (5 mi) across, and estimated at 100,000 years old, [3] it may be one of the largest and oldest clonal colonies on Earth. [4] [5] [6] Among animals, the largest species are all marine mammals, specifically whales. The blue whale is believed to be the largest animal to have ever lived. [7]
Scientists consider the blue whale, which grows up to 110 feet (33.5 meters) long, to be the largest known animal ever to exist on the planet. But it’s possible that the 202 million-year-old ...
Fin whales are the world’s largest whale species other than blue whales, according to the International Whaling Commission. The International Whaling Commission imposed a ban on commercial ...
The largest toothed whale (Odontoceti) is the sperm whale (Physeter macrocephalus), bulls of which usually range up to 18.2 m (60 ft) long and a mass of 50 tonnes. The orca or killer whale (Orcinus orca) is the largest species of the oceanic dolphin family.