Image of the Day

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image: Image of the Day: A Bundle of Nerves

Image of the Day: A Bundle of Nerves

By | May 5, 2014

A section of squid skin showing chromatophores (starbursts) and iridiphores (gray clouds)—cells that change the skin's color—and the nerve cells (red lines) that mediate the process

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image: Image of the Day: Drinking Crocodile Tears

Image of the Day: Drinking Crocodile Tears

By | May 2, 2014

A butterfly and a bee feasting on the tears of a spectacled caiman in Costa Rica. The insects were probably searching for scarce mineral nutrients.

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image: Image of the Day: Spring Stirrings

Image of the Day: Spring Stirrings

By | May 1, 2014

After spending 10 months in a cocoon, the Spanish Moon Moth (Graellsia isabellae) emerges sometime in late April or early May to mate.

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image: Image of the Day: Diatoms on Display

Image of the Day: Diatoms on Display

By | April 30, 2014

Fan-shaped Licmophora flabellata, unlike most diatoms, are symbionts, often attaching to algae, aquatic plants, or other living substrates.

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image: Image of the Day: Relapsing Invader

Image of the Day: Relapsing Invader

By | April 29, 2014

Borrelia hermsii, one of the bacterial species that causes relapsing fever, among red blood cells

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image: Image of the Day: Tough Helmet

Image of the Day: Tough Helmet

By | April 28, 2014

The treehopper, Hemikyptha marginata, is native to Brazil. Its sharp pronotum makes it hard for predators to eat it.

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image: Image of the Day: Bell of the Ball

Image of the Day: Bell of the Ball

By | April 25, 2014

Close up of a sea nettle jelly's bell

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image: Image of the Day: Sticky Situation

Image of the Day: Sticky Situation

By | April 24, 2014

Stalks on a sundew plant's leaf glisten with sticky secretions. They trap unwary insects for the carnivorous plant.

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image: Image of the Day: Microscopic Marauder

Image of the Day: Microscopic Marauder

By | April 23, 2014

Lace wing bugs (family Tingidae) are common pests of a variety of plants, feeding on leaf sap.

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image: Image of the Day: Expanding Embryo

Image of the Day: Expanding Embryo

By | April 22, 2014

Nuclei of proliferating cells shine blue in this quail embryo.

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