…propel the body through water by using the limbs, or (in the case of a fish or other aquatic animal) by using fins, tail, or other bodily movement…
…a gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy…
…act in accordance with (or against) the prevailing opinion or tendency…
…shorts worn by men for swimming…
…¿sabes nadar? — bueno, a mi manera…
