'Sea lice' are actually not-so-cute baby jellyfish

Story highlights

  • "Sea lice," a.k.a. ocean itch or seabather's eruption, are actually microscopic marine larvae
  • The larvae are as small as speck of pepper
  • Their stings can cause itchy red rash and flu-like symptoms

(CNN)Sea lice. Beach lice. Seabather's eruption. Pika-pika. Ocean itch. Those are just some of the names given to a rash caused by a minuscule creature that often invades summer waters in Florida and the Caribbean, pestering swimmers with nasty bumps and sometimes flu-like symptoms.

As tiny as a speck of pepper or the period at the end of this