Do Fish Get Thirsty and Do They Need to Drink Water?
Science ABC
Jun 8, 2022 10:30
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Do fish get thirsty? Do they even need to drink water when they're literally surrounded by it? The answer depends on whether the fish lives in freshwater or saltwater — and the science behind it involves osmosis, osmoregulation, and some clever gill adaptations.
In this video, we explain why freshwater fish absorb water through their skin and pee constantly, why saltwater fish actively drink water and excrete salt through their gills, and how salmon can switch between both strategies.
📚 Topics Covered:
- What is thirst? Maintaining water-salt homeostasis
- Osmoconformers vs osmoregulators
- Freshwater fish: absorb water, excrete excess via kidneys
- Saltwater fish: actively drink, excrete salt through gills
- Salmon: switching between freshwater and saltwater physiology
- Do fish actually feel thirsty? Probably not!
⏱️ Timestamps:
👉 Watch Next:
▶ Homeostasis Explained in Simple Words — https://www.youtube.com/watch?v=S0WLVFKG2WI
▶ Do Sunflowers ALWAYS Face the Sun? — https://www.youtube.com/watch?v=9RBktO4RK8s
▶ How to live without a heart or brain — Lessons from a Jellyfish — https://www.youtube.com/watch?v=rUogIRH2XwQ
#fish #thirst #osmosis #biology #ocean #scienceabc
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Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )
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