today i learned – mon 13th nov 2017

as a full on animal geek … the fact that blue planet returned a few weeks ago makes me very happy 😬

felt only right to do a fishy fact today 😏 you know, as attenborough graced our telly again last night 👍🏻

#tdil that, surprisingly, even fish need to drink water to survive! 🐠 … well, some fish do 😅

i don’t know why but i find the fact that fish need to drink really weird 😳 … i guess, of all the creatures out there, fish are the best placed for this conquest 😂

anyway, back to the fact! fish that live in freshwater do not have to drink and fish that live in salt water do. the reason why there’s a difference between the two – salt 😬

now, if freshwater fish were to actively drink water … they’d have a bit of a merh due to their blood becoming diluted #notideal. this is because their blood has a higher concentration of salt than the surrounding water and, if they were to drink lots, they’d ruin the salt:water balance in their body 👎🏻

instead of drinking water, freshwater fish use osmosis to absorb water through their skin and gills … they then wee out the excess water 🙂

saltwater fish, on the other hand, drink water lots! you see, the opposite of the above applies to saltwater fish … they’re at the constant threat of dehydration due to their blood having a lower concentration of salt than the surrounding water. for that reason, they have to drink lots and lots to prevent … well … death 🙈 #awks

thanks to mother nature and her amazing ability to design stuff perfectly, saltwater fish are able to take in lots of water and filter out all excess salt with their gills 😏 #skills

there you go! saltwater fish have a drinking problem and freshwater fish don’t 😂 i guess they’ll never have to worry about getting thirsty at least? 🙃

right, i’m off to watch youtube clips of blue planet again 😍

tatty bye 🤙🏻 #tdil

______

enjoyed that one 🙂 gotta love a good animal fact! if you feel like you’ve not yet had your fill of facts, you’ll find more ->here<-

(picture license time! … nemo came from ->here<-, the koi carp came from ->here<- and the ‘grey and yellow fish’ came from ->here<-)

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