sustainability is the ability to be maintained at a certain rate or level.
47 species
beluga whale

narwhal

blue whale

killer whale
sperm whale

sei whale
whale are endangered because the humans are hunting them or killing them for sport like what whalers are doing they go around and kill whales for money one reason may be because whale blubber is used in perfume so they kill the whale get the blubber then throw the corpse away into the ocean to be eaten by sharks and other carnivorous animals there is also pollution, aquatic construction, over fishing, small and large scale boating and whaling whaling to get blubber skin and those things, boating because the whale gets cut then the sharks smell blood and kill them, aquatic construction because they can get trapped or killed by the construction, pollution because plastic can clog their throats and kill them, over fishing because then whales lose their food and finally oil spills because oil can clod the blowhole and mouth meaning they cannot breathe
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