Today I learned on Nostr: TIL hippos can defecate into rivers so much that their feces builds up and kills fish ...

TIL hippos can defecate into rivers so much that their feces builds up and kills fish through hypoxia, or lack of oxygen. In the Mara River, about 4,000 hippos poop out more than 9 tons of dung each day. Hippo feces also leaves behind chemicals such as ammonium and sulfide, which is harmful to fish.

https://www.usatoday.com/story/news/nation-now/2018/05/18/hippo-poop-ki…
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1fuort1/til_hippos_can_defecate_into_rivers_so_much_that/