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Sea squire illustrations from Ernst Haeckel.
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Sea Squirts

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Illustration of colorful nudibranchs from Ernst Haeckel.
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Nudibranchs

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Illustrations of radiolarians from Ernst Haeckel.
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Radiolarians

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Haeckel discovered a species of rhizostome jellyfish in Bellagemma, Ceylon, in December 1881. Its form so impressed him that he used it as a model for ceiling decorations in his Villa Medusa home in Jena.
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Rhizostome Jellyfish

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Sand dollars (like those pictured in this set of illustrations) are flattened, burrowing sea urchins. Dead, sunlight-bleached specimens resemble silver coins, hence their common name. These figures portray a sand dollar’s lifecycle from larva to adult.
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Sea Urchins

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Jellyfish illustrations from Ernst Haeckel.
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Semaeostome Jellyfish

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Charles Darwin's first diagram of an evolutionary tree appears in his First Notebook on Transmutation of Species (1837).
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Darwin’s Evolutionary Tree Diagram

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Diagram showing gills on a crab absorbing nutrients
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Crab Gills Absorb Nutrients

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This computer screen image shows views of each sonar beam and the path being mapped by the ship.
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Multibeam Sonar Screen

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A polar bear and its cub in Arctic National Wildlife Refuge, Alaska.
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Polar Bear Mother and Cub

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a scientist pipettes in the woods
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Working On Site

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a spherical container in an open palm
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Assembled Dinoflagellate Blinker

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