With a baking hot summer just starting, millions of Americans have already begun flooding the nation’s beaches. They’ll face traffic jams, algae blooms, sunburn and a rising threat – painful jellyfish ...

With a cube-shaped bell and four tentacles extending from each corner, box jellyfish have a striking look that sets them apart, Jace Tunnell writes.

LEWES, Del. — More beachgoers have been getting a shock this summer as jellyfish numbers bloom along the Delaware coast, interrupting — but not stopping — the summer fun. Beach patrol captains ...