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

Nov 3, 2018A bison preserve
Nov 3, 2019It s time to fall back
Nov 3, 2020Vote!
Nov 3, 2021World Jellyfish Day
Nov 3, 2022International Day for Biosphere Reserves
Nov 3, 2023World Jellyfish Day
Nov 3, 2024International Day for Biosphere Reserves

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