Hundreds of dolphins found dead in Amazon lake were in water hotter than a jacuzzi,

Question

 A severe drought and record heat in Brazil’s Amazon caused Lake Tefé’s water to reach 41°C (106°F), killing over 150 endangered river dolphins in 2023. Scientists found that the lake’s extreme temperature, low water levels, and lack of wind created deadly conditions for aquatic life. The study shows that Amazon lakes are heating faster than the global average due to climate change, threatening ecosystems and local communities. Researchers warn that such extreme events are becoming more frequent and call for stronger climate action and local involvement. "You couldn't put your finger in the water," said the lead author of the study, which spotlights the impacts of planetary warming on aquatic ecosystems.

Answer 1

This claim is true. I was very shocked after doing my own research to find out that this claim was true, and there were a large number of dead dolphins showing up in Amazon Lake. I read an article from The Guardian that supported this claim by talking about Amazon Lake heating up to "hot-tub" temperatures and killing pink river dolphins. So, this claim was not exagerating and the water did in fact reach "jacuzzi" and "hot-tub" level temperatures. It claims that, due to droughts and heatwaves, the lake called Lake Tefe reached around 105 degrees Fahrenheit. These dolphins cannot survive in this heat, and so, many died. It was even said in this article that people tried putting their fingers in the water, and it was unbearably hot. From just one lake, called Lake Tefe, they recorded up to 200 dead dolphins. I also looked at an article from the Smithsonian Magazine that talked about how hot this lake got and how the dolphins and fish died due to the extreme temperatures.  Both of these articles talk about how much of a climate emergency this is because the temperature of the lake is increasing each year due to climate change. So this claim is true, and the source they used had the correct information. 

https://www.smithsonianmag.com/smart-news/water-temperatures-in-amazonian-lakes-hit-hot-tub-levels-killing-fish-and-dolphins-180987672/

https://www.theguardian.com/environment/2025/nov/06/climate-crisis-amazon-lakes-water-temperature-hotter-than-spa-bath-aoe

Answer 2

unfortunately this claim that "hundreds of dolphins found dead in amazon lake were in water hotter than a jacuzzi" is true and it also wasn't just dolphins it was also fish and other aquatic animals and they simply just cannot survive at temperatures this high the temperature was at 41°C which is over 100 °F once it gets this high the fish stop functioning the enzymes get blocked and they die. the cause of the severe heat in the lakes were due to a draught and in result ended up killing over 200 dolphins. these increasingly temperatures in the amazonian lakes are also happening due to climate change and its not just something that goes away there needs to be a global effort to reduce fossil fuels. 

source:https://www.sciencealert.com/amazon-lakes-became-hotter-than-a-hot-tub-killing-hundreds-of-dolphins