Craspedacusta sowerbii aren't frequently seen in their adult, "medusa" form. The invasive species likely came from Asia in ...

A rare freshwater jellyfish was spotted last month in Lake Erie, according to Pennsylvania officials. Ray Walter, an intern with the Pennsylvania Department of Environmental Protection, came across a ...

Jellyfish blooms are cyclical, and if conditions are right, an explosion can occur. When warm water meets the right current, wind direction and salinity level, it’s a jellyfish world, and we’re all ...