how fast do they swim?
20 to 48 km/h
Blue whale
The maximum speed of a blue whale while being chased or harassed has been reported at 20 to 48 km/h (10–25 knots).
what characteristics do all the organisms in the animal kingdom share Animals are eukaryotic, multicellular, heterotrophic, respire aerobically what is meant by the third feature? A heterotroph  is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. can you give example of such species? All animals and fungi, ome bacteria and protists, and many parasitic plants. regarding the first one; how are they classified? Insecta, Pisces, Amphibia, Aves, and Mammalia. which is the largest of it? The blue whale and the smallest? Myxobolus shekel what is the size of the largest one? length of 29.9 meters where are they found? In all major ocean basins, except the Bering Sea and the Arctic Ocean
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Blue whale [SEP] Swim speed
There are regular reports of much faster migration speeds and rapid sustained bursts of speeds; notably their swimming speeds were too fast for whalers until the modern era of whaling introduced steam-powered boats and explosive-tipped harpoons. The maximum speed of a blue whale while being chased or harassed has been reported at 20 to 48 km/h (10–25 knots).