Manatees may seem slow and sleepy, but they have some surprising tricks under the surface. For starters, they are one of the few mammals that constantly replace their teeth. As old molars wear down from chewing gritty seagrass, new ones slowly roll forward like a conveyor belt—handy for an animal that eats for up to eight hours a day.
Juvenile manatees, Crystal River, Florida, United States
Today in History
More Desktop Wallpapers:
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The oldest way to fly
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Gdańsk on the banks of the Motława river, Poland
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American bison in Yellowstone National Park, Wyoming, USA
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J.R.R. Tolkien Day
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Theres no denying the power of Denali
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Giant panda
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Warm light through an ancient forest
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Lion, Queen Elizabeth National Park, Uganda
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Grand Staircase-Escalante National Monument, Utah, USA
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A rainbow that’s worth the rainfall
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World Lizard Day
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Haghartsin Monastery, Armenia
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Pumpkin field, Victoria, British Columbia, Canada
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Rainbow River, Rainbow Springs State Park, Florida, United States
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Autumn equinox
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Whooper swans, Kotoku Pond, Japan
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Pier perfect
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Castle in the sky
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Guarding the pass
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Amphitheatre of El Jem, Tunisia
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Gateway Arch in St Louis, Missouri, United States
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Leadenhall Market, London
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Spine-cheeked anemonefish
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Let the Great Backyard Bird Count begin!
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Summer solstice
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Karlovy Vary, Bohemia, Czechia
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Sydney Harbour, New South Wales, Australia
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Wasson Peak, Saguaro National Park, Arizona, United States
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Mendenhall Glacier, Alaska, United States
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St Andrews Day
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