High Water Temperatures Linked to Mass Die-Off of Amazon River Dolphins

At least 125 Amazon river dolphins have died in Brazil's Lake Tefé due to unusually hot water temperatures reaching 39.1°C.
The high temperatures are caused by an ongoing severe drought in the region that has raised water temperatures about 9°C above normal.
Scientists are investigating other potential contributing factors like diseases or polluted water, but high temperatures appear to be the main cause.
The high temperatures are disorienting the dolphins and preventing them from diving and feeding properly.
The drought is also impacting local communities, transportation, potential ecotourism revenue, and has caused mass fish kills in parts of the Amazon River system.