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

A rare jellyfish was spotted last month in Lake Erie near Pennsylvania, state officials said. Ra;y Walter, an intern with the Pennsylvania Department of Environmental Protection, came across a ...

A creature resembling a jellyfish was spotted in a pond at Presque Isle State Park. Said creature is called a Craspedacusta Sowerbii.

ERIE, Pa. (AP) — They’ve been in the Great Lakes Basin for decades, but recently entered lakes Erie and St. Clair. Freshwater jellyfish — about the size of a penny or quarter — are ...

CLEVELAND– They’ve been here for decades, but a recent Facebook post about jellyfish in Lake Erie is bringing attention to the aquatic animals. Darien Donnelly in Port Dover, Ontario posted ...

Waves break on Edgewater Beach west of downtown Cleveland, Thursday, Sept. 9, 2010. They've been in the Great Lakes Basin for decades, but recently entered lakes Erie and St. Clair. Freshwater ...

An intern with the Department of Environmental Protection captured a rare sight in Pennsylvania's Presque Isle Bay — a ...

A rare freshwater jellyfish was captured on camera at Lake Erie. The Pennsylvania Department of Environmental Protection ...

You might expect jellyfish in tropical waters, but not while swimming in the Great Lakes, yet that’s exactly what surprised scientists when Lake Erie recently had a rare freshwater jellyfish sighting.

James Grazzio, a Great Lakes biologist with the Department of Environmental Protection, never expected to encounter the ...

According to Pennsylvania DEP, their summer intern was in "the right place at the right time" to capture the moment.