Arey, sharks ki baat sahi hai — unhe behti paani mein hi rehna padta hai, warna doob jaate! Par fish? Mere aquarium mein mere goldfish, Chunnu, aram se ek hi gahraai pe thanda paani mein float karta rehta hai, uska "swim bladder" ka hawa ka tank usko balance karta hai. Sahi bataun? Wahi swimming ki machine ka floatation waala principle hai — jab tu pedal dabata hai, na, wahi hawa ka pressure!
#swimming#open-water
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