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

palette

Today in History

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

More Desktop Wallpapers:

Commemorating Indigenous Peoples
An underwater paradise to explore
Oct. 16, 2025Eurasian lynx
Jul. 2, 2025Spine-cheeked anemonefish
Apr. 19, 2024Ring of Brodgar, Orkney, Scotland
Dec. 8, 2024Notre-Dame reopens
Oct. 5, 2025World Teachers Day
Jan. 22, 2025Ad-Deir, Petra, Jordan
Aug. 10, 2025World Lion Day
A light in the coastal darkness
Straight out of a fairytale
Jun. 5, 2024World Environment Day
Nov. 11, 2023Young Peak, British Columbia
Sep. 10, 2023Grandparents Day
Heavenly hot springs
Jul. 1, 2024Canada Day
Nov. 1, 2023Kenny Lake, Lake Superior Provincial Park
A day for cousins of every stripe
When just a pinch of salt won’t do
Mar. 10, 2025National Napping Day
On the open ocean road
Standing on glass 275+ metres in the air
Dec. 18, 2024English National Ballet performing The Nutcracker
A chocolate lovers favourite fruit
Sep. 1, 2024River Thames, London, England
The origin of Canadas national parks
May 26, 2025Mount Hamilton, San Francisco Bay Area, California, United States
Feb. 4, 2025Golden Bridge, Bà Nà Hills, Da Nang, Vietnam
Nov. 29, 2025Red deer stag in De Hoge Veluwe National Park, Netherlands
Jul. 7, 2024Rice terraces of Mù Cang Chải, Yên Bái province, Vietnam