Named for their ghostly, transparent bells, moon jellies have short tentacles that are armed with stinging cells, or “nematocysts”.  Fortunately their sting lacks the toxic, painful punch of some other jellies. Moon jellies are one of the most widespread jelly species in the world and are found throughout most of the world’s oceans. There are many variations of this species and new ones are still being added. Moon jellies can grow to  between 25 and 40cm in size.  Look closely - those four horseshoe-shaped structures you see in the bell of the moon jelly are in fact the jelly's gonads.

Although they’re 95% water, moon jellies are the main diet of leatherback turtles and other marine creatures. Thousands of animals die every year from mistakenly swallowing drifting plastic bags which resemble the gelatinous jellies.

Read more about other jellies:

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Species Facts

  • Moon jellies are 95% water
  • Thousands of animals a year die after consuming plastic bags, which they've mistaken for jellies