Jellyfish create a ‘virtual wall’ to enhance performance — ScienceDaily

New research led by the University of South Florida has uncovered one of the reasons jellyfish have come to be known as the “world’s most efficient swimmer.” Brad Gemmell, associate professor of integrative biology, found jellyfish produce two vortex rings, which are donut-shaped bodies of fluid underneath their translucent bodies, that spin in opposite directions. […]