World Jellyfish Day Nov. 3, 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

An experiment in sustainability
Nov. 3, 2023World Jellyfish Day
Nov. 3, 2024International Day for Biosphere Reserves

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Nov. 20, 2025World Childrens Day
Dec. 28, 2023Humpback whale, Disko Bay, Greenland
Jun. 26, 2024Banggai cardinalfish with sea anemone
Jan. 12, 2025Crescent-tail bigeye fish, Great Barrier Reef, Australia
One rare streak
Look, but don’t touch
Aug. 20, 2025The citadel in Bonifacio, Southern Corsica, France
Jan. 13, 2025Happy Welsh New Year!
Feb. 19, 2024Toledo, Spain
Jul. 25, 2025Colourful houses of Las Palmas de Gran Canaria, Spain
May 15, 2025Palace of Westminster, London, England
Mar. 24, 2025African elephants in Namibia
Aug. 3, 2024Three Natural Bridges, Wulong National Park, China
An oasis in the desert
Sep. 11, 2024Red fox mother kissing her baby
Sep. 13, 2024Point Reyes National Seashore, California, USA
Why are blackbirds tied to winter?
May 24, 2024Ordesa y Monte Perdido National Park
A labyrinth of luxury
What are these colourful insects?
A glimpse of Yoho National Park
Feb. 1, 2025Rolands Breach, Spain
Sep. 9, 2023Ayutthaya Historical Park, Thailand
Whats blooming so brightly?
Jul. 7, 2025Northern gannets, Shetland Islands, Scotland
Jan. 15, 2024Northern Lights
Nov. 6, 2023Lago Pehoé, Torres del Paine National Park, Chile
Dec. 22, 2023Ljubljana, Slovenia
Jan. 14, 2025Village of Zahara de la Sierra, Cadiz, Spain
Look up, incoming…