Bizarre jellyfish can sting you without touch

[Still Waters]

A species of jellyfish hunts its prey by hurling venom grenades to create "stinging water", researchers said Thursday, solving a long-standing mystery as to how they gather food without tentacles.

The upside down jellyfish (Cassiopea xamachana), found in shallow waters around Florida, the Caribbean and Micronesia, is a frequent nuisance to snorkelers and surfers who appear to get stung without touching the creatures.

https://www.sciencealert.com/upside-down-jellyfish-hurl-venomous-mucus-grenades-to-kill-prey

https://www.nature.com/articles/s42003-020-0777-8