World Jellyfish Day

Join us in honoring the unique jellyfish, a vital part of our oceans and ecosystems.

NOV3

Tuesday, November 3Every year on November 3

days to go

Roots: Established in 2014
Vibe: A mix of education and appreciation for marine life
Also on Nov 3: Housewife’s Day · Sandwich Day · One Health Day
Hashtag: #WorldJellyfishDay

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3 ways to celebrate

AT HOME

Watch jellyfish videos

Stream glowing jellyfish footage and unwind.

WITH FRIENDS

Visit an aquarium

See the jellyfish exhibit at your local aquarium.

AT WORK OR SCHOOL

Draw a jellyfish

Sketch one during a creative break and share it.

Plan ahead

World Jellyfish Day is observed on November 3 every year. Here is where it lands for the next ten years, handy for planners, marketers and party people.

2026Tue, Nov 3this year

2027Wed, Nov 3

2028Fri, Nov 3

2029Sat, Nov 3

2030Sun, Nov 3

2031Mon, Nov 3

2032Wed, Nov 3

2033Thu, Nov 3

2034Fri, Nov 3

2035Sat, Nov 3

2036Mon, Nov 3

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Fast facts

Over 200Species of jellyfish exist

Jellyfish have existed for over 500 million years

The story

World Jellyfish Day, observed on November 3, was established to raise awareness about these intriguing creatures and their ecological significance. With over 200 species inhabiting the world's oceans, jellyfish play crucial roles in marine ecosystems, serving as both predator and prey. Their presence indicates the health of marine environments, making them vital indicators of ocean changes.

Read the full story

These gelatinous animals have existed for over 500 million years, showcasing incredible adaptations. Some species, like the immortal jellyfish (Turritopsis dohrnii), can revert to their juvenile form after maturing, defying the typical life cycle. This unique characteristic has fascinated scientists and inspired various studies on longevity and regeneration.

Jellyfish also contribute to marine biodiversity, providing food for various species, including sea turtles and certain fish. However, jellyfish populations can fluctuate dramatically due to overfishing and climate change, leading to concerns about their impact on marine ecosystems. As we celebrate World Jellyfish Day, it is essential to understand these dynamics and advocate for marine conservation.

Celebrating this day can take many forms, from educational programs to community cleanups. Engaging with local aquariums or ocean conservation organizations can deepen our appreciation for jellyfish and the oceans they inhabit. By learning more about jellyfish and supporting marine health, we can help ensure these remarkable creatures continue to thrive.