Jellyfish are neither jelly nor fish. Jellyfish lack backbones,
heart, blood, brain, or gills and, in fact, are over 95% water.
Jellyfish possess stinging cells located on the tentacles and
other Jellyfish usually just drift with the ocean currents, but
occasionally swim by pulsing their umbrella or bell. Even
jellyfish that have washed ashore should not be handled, since
the stinging cells may still fire. The stings of some jellyfish
can be quite painful, causing reactions ranging from mild rashes
to death (in extreme allergic-reaction instances.) Although
feared by swimmers, most jellyfish are harmless to human