A massive umbrella-shaped body,
long trailing tentacles,
and an overwhelming size.

Nomura’s jellyfish (Nemopilema nomurai) is one of the largest jellyfish species in the world. It is known for its massive seasonal blooms in East Asian waters, where it can significantly impact fisheries and marine ecosystems.

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🧬 What Is Nomura’s Jellyfish?

• Scientific Name: Nemopilema nomurai
• Common Name: Nomura’s Jellyfish
• Distribution: East China Sea, Yellow Sea, Sea of Japan (East Sea)
• Habitat: Coastal and offshore waters

👉 The species was named after a Japanese fisheries scientist, Nomura.

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👀 Appearance & Characteristics

• Bell Diameter: Can exceed 2 meters (6.5 feet)
• Weight: May grow over 200 kg (440 lbs)
• Color: Translucent white to light brown

✔️ Key Features

• Extremely large body size
• Venomous tentacles
• Capable of forming massive population blooms

✨ A single adult can be as large as a small car tire.

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🌊 Ecology & Behavior

• Feeds mainly on plankton
• Drifts with ocean currents
• Can appear in enormous numbers in certain regions

👉 Climate change and shifts in marine environments are believed to contribute to its large-scale outbreaks.

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⚠️ Interaction with Humans

• Damages fishing nets
• Reduces fish catches
• Tentacle stings can injure fishermen

👉 It is known to cause significant economic losses in the fishing industry.

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🌿 Ecological Significance

• Indicator of marine ecosystem changes
• Influences food web dynamics
• Closely linked to environmental conditions

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Nomura’s jellyfish is:

🪼 One of the largest jellyfish species in the world
🌊 A species known for massive population blooms
⚠️ A symbol of changing marine environments

Drifting through the ocean with its enormous body,
it represents both the mystery of nature
and a challenge for human industries.