Box jellyfish typically show up near Waikiki about eight to ten days after a full moon, according to the Waikīkī Aquarium.

Visitors to Melbourne's south-eastern beaches over the weekend were surprised to see an influx of crimson jellyfish bobbing in the water. One expert says a "perfect storm" of factors has brought them ...

While jellyfish stings are seldom life-threatening, they can be a very unpleasant experience. Stings can cause pain, swelling, and in rare cases, serious reactions like breathing trouble. Treat stings ...

Gloucester officials are warning beachgoers to be on the lookout after lion’s mane jellyfish were spotted in the city’s outer harbor. Officials issued an advisory for Niles Beach and nearby areas on ...

The Chironex fleckeri is the largest – and most venomous – box jellyfish - Adisha Pramod/Alamy Sun, sea, sand – and stings. Spain’s tourism trifecta is facing an unwelcome addition this summer, as ...

At Delaware's Lewes Beach, Beach Patrol Captain Strohm Edwards has seen more jellyfish this year than any other and stings have tripled. Along the Nantucket Sound shoreline, researchers believe ...

Many people enjoy spending their summers at the beach, listening to the waves, and exploring colorful tidepools. But too often, we forget that even the smallest and most unassuming creatures can be ...

Gloucester city officials are warning beachgoers to avoid going near Lion’s Mane jellyfish, which have been spotted at several city beaches this summer. Lion’s Mane jellyfish have been seen in the ...

A new worry has come ashore to Alabama’s beaches this month, lighting up social media with pictures of red welts on swimmers’ bodies and raising fresh concerns about what could be a long, painful ...

A penny-sized jellyfish has been spotted in the western part of Lake Erie as well as in western Pennsylvania. The stinging cells of these freshwater jellyfish can't pierce human skin. The non-native ...