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Venomous jellyfish blooms

Facts for Prelims (FFP)


Source: TH

 Context: An unusual occurrence of venomous jellyfish blooms, particularly Pelagia noctiluca, was reported along the Visakhapatnam coast in Andhra Pradesh recently.

  • Pelagia noctiluca, rarely seen on the East coast of India, is known for causing various illnesses including diarrhoea, vomiting, extreme pain, and anaphylactic shock.
  • The blooms are attributed to rising ocean temperatures, posing risks to both fishing industries and tourism.


Pelagia noctiluca, also known as the mauve stinger, is a jellyfish that can glow in the dark.

Its name in German means “night light”, referring to its reddish colouring and bioluminescence. The jellyfish is also known as the “mauve jelly” and the “oceanic jelly”