Pearl mullets' remarkable migration
Pearl mullets' remarkable migration
Watch pearl mullets migrate upstream in order to lay eggs.
Contunico © ZDF Studios GmbH, Mainz
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Contunico © ZDF Studios GmbH, MainzWatch pearl mullets migrate upstream in order to lay eggs.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Wessel Cirkel/Dreamstime.comLearn how global warming affects the migratory patterns of birds.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Rinus Baak/Dreamstime.comLearn about the monarch butterfly, including its annual migration to Mexico.
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© Nandana Rathnayaka/Shutterstock.comMigratory lemon emigrants (Catopsilia pomona) “puddling” in Yala National Park, Sri Lanka. Puddling, in which butterflies sip water from damp or muddy soil, provides salts and other minerals that the insects cannot obtain from nectar alone.
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Encyclopædia Britannica, Inc.Army ants (genus Eciton) migrating and gathering in a bivouac.
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Encyclopædia Britannica, Inc.Learn about the life cycle of the monarch butterfly (Danaus plexippus).
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Contunico © ZDF Studios GmbH, MainzA dominant female meerkat expelling a subordinate from the pack.
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Encyclopædia Britannica, Inc.A jellyfish contracting its body.
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© MinuteEarth (A Britannica Publishing Partner)Factors that favour the production of more male offspring within human populations, which has resulted in a slightly skewed sex ratio across the species.
News •
A New Ritz-Carlton Is Blocking a Key Animal Migration. Tribal Leaders Are Suing.
• Dec. 3, 2025, 8:13 PM ET (Wall Street Journal)
Transcript
The rivers and streams of eastern Turkey are witness to a spectacular annual event. The inci kefali, or pearl mullet, are gathering for an impressive migration effort. But their presence doesn’t go unnoticed. Hunters are determined to make the most of this food bonanza. In their millions, the mullet battle the fierce currents to lay their eggs in clear waters upstream. Despite the abundance of fish, the gulls squabble over every catch. They know this food bonanza will be short-lived. Before long, the fish will have reached their destination.
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