Jellyfish snot can sting swimmers who never touch the animal
Mucus from jellyfish that sit upside-down on the seafloor has blobs lined with stinging cells
![an Upside-down jellyfish](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/02/021220_egdj_jellyfish_feat.jpg?fit=1028%2C579&ssl=1)
Upside-down jellyfish (pictured) can sting other animals without touching them thanks to microscopic clusters of stinging cells found in the snot that it releases into the surrounding water.
National Aquarium