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Most fish don’t have to work very hard to swim. Their streamlined bodies and powerful tails allow them effortless propulsion through the water column. But what if your tail is mostly just for show, like a betta?
It’s the equivalent to trying to swim in a ballgown.
For all of you out there who can swim, we propose the following experiment. You don’t need a massive gown, but try to swim using only your arms in a sculling motion. You aren’t allow to use your legs! It won’t take much to make you tired. If you switch and swim using your legs, you’ll notice it’s a lot easier. If you add on extra yards of fabric, you may create the new extreme fitness craze, but please don’t.[...]