When passengers aboard a Viking Expedition cruise spotted a massive creature in the frigid waters off Antarctica, they suspected it was special. However, they did not realize they had stumbled upon the extremely rare giant phantom jellyfish (Stygiomedusa gigantea). Until then, there had been only 126 recorded observations of the species since its identification in 1910.
Scientists spotted a rare giant phantom jellyfish off the coast of California. It is said to be among the world's largest with a bell width of 3 feet wide and "mouth-arms" at 33 feet long.