Last year, a 7,500-plus-square-mile area off of South Australia, saw roughly a million marine animals wiped out, one fell swoop. Even some humans have taken curiously ill. This summer, scientists’ findings are suggesting that a bloom of microalgae called Kernia cristata , which produced several powerful toxins, is the root of it all. “This can partly explain the scale of the impacts witnessed in this event, which have included the mass mortality of marine invertebrates, fish, mammals and birds, over many months,” University of Technology Sydney Professor of Marine Biology Shauna Murray said in a press statement. https://www.youtube.com/shorts/p5Coz-WGL3E As with most things in the natural world, these algae are critically important within the web of living things. They absorb carbon dioxide, create oxygen and habitats, and feed myriad other creatures. And as with just about anything, too much of anything can cause problems.…