Flower Hat Jellyfish (Olindias formosa)


The Flower Hat jellyfish (Olindias formosa) is a species of jellyfish found primarily in the waters around Japan and Taiwan. It is named for its distinctive bell, which resembles a wide-brimmed hat adorned with colorful flowers. The bell can grow up to 30 centimeters in diameter and is lined with long, trailing tentacles.

The Flower Hat jellyfish is a carnivorous predator that feeds on small fish and plankton. Its tentacles are covered in stinging cells called nematocysts, which it uses to stun and capture its prey.

Despite its beauty, the Flower Hat jellyfish can be dangerous to humans. Its sting is painful and can cause a range of symptoms, including skin irritation, muscle cramps, and difficulty breathing.

previous arrow
next arrow
Species Information
  • Harmful to humans: Yes

  • Distribution: Coastal sea of Japan and Taiwan

  • Maximum Bell Size: 30 cm (12 inches)

  • Life Span: 1 year

  • Feeding: Live fish and crustaceans

  • Temperature: 13– 18 °C (55 – 65°F)

  • Salinity: 25-35ppt

  • Photosynthetic: No

  • Care level: Moderate