World Jellyfish Day 3 Nov 2025

World Jellyfish Day

They don"t have brains, bones or even hearts, yet jellyfish have pulsed through Earth"s oceans for half a billion years. Today, on World Jellyfish Day, these wobbly wonders get their moment in the sun—or at least under the sea. The day promotes efforts to protect jellyfish habitats from threats like pollution, nutrient-rich runoff and ocean acidification.

© Christian Vizl/TANDEM Stills + Motion

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Today in History

Living in harmony
3 Nov 2023World Jellyfish Day
3 Nov 2024International Day for Biosphere Reserves

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Today, a nation was born
Sentinel of the sea
A glimpse of the grandest of canyons
23 Sep 2025Keel-billed toucan, Costa Rica
9 Sep 2024Iguazu Falls at the border of Argentina and Brazil
Widespread and long-eared
Festival fever
25 Aug 2024Glacier National Park, Montana, USA
14 Mar 2024Happy Pi Day!
12 Jul 2024Mount Rainier National Park, Washington, USA
28 Nov 2025Val Brandet, Corteno Golgi, Brescia, Lombardy, Italy
25 Oct 2025Martimoaapa Mire Reserve, Finland
28 Jan 2024Channel Country, Australia
Postcard from Italy
Aug 25, 2023National Park Service anniversary
King of the jungle? Nope
Happy Mothers Day!
13 Aug 2025Corona Arch near Moab, Utah, United States
21 Aug 2025Wheatear, Peak District National Park, England
Waterfall capital of the world?
An oasis in a sea of sand
12 Jan 2025Crescent-tail bigeye fish, Great Barrier Reef, Australia
8 Jun 2024European hare
18 Sep 2023Milky Way over Southwest Alentejo and Vicentine Coast Natural Park
26 Aug 2024Palmyra Atoll National Wildlife Refuge
The ‘eighth wonder’?
11 Mar 2024Koala
Isn’t this view mesmerizing?
Owl be seeing you
15 Dec 2024Lake Misurina, Dolomites, Italy