Do fish get thirsty?
Fish's Water Puzzle
Do fish get thirsty?
Picture a fish, surrounded by water, every single second of its life. It seems like the silliest question in the world: do fish get thirsty? Plot twist — the answer isn't "they're already wet, case closed." It's much weirder, and it depends entirely on which ocean (or pond) the fish calls home.
First, a tiny rule that runs the whole show. Water is bossy. If you put salty water and plain water next to each other, separated by a thin skin, the plain water will always sneak toward the salty side, trying to even things out. This sneaky shuffle is called osmosis. Remember that word — every fish on Earth is fighting it.
