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Longshore currents, generated when waves approach the beach at an angle. At Oceanside, California, the longshore current is flowing toward the observer. (Photo courtesy of Department of Engineering, University of California, Berkeley)

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from article Nearshore processes

Definition sketches for nearshore circulation cells. (a) Asymmetrical cell for breakers oblique to the shore. (b) Symmetrical cell for breakers parallel to the shore.

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from article Nearshore processes

Beach profile, showing characteristic features.

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from article Nearshore processes

Effect of headlands on the accretion of beach sand at Point Mugu, California. The point forms a natural obstruction that interrupts the longshore transport of sand, causing accretion and a wide beach to form (foreground). The regularly spaced…

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from article Nearshore processes

Sand delta at Rio de la Concepción on the arid coast of the Gulf of California. Such deltas are important sources of sand for beaches. (Courtesy of D. L. Inman)

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from article Magellanic Clouds

Large Magellanic Cloud; the large red patch is the 30 Doradus nebula, one of the largest H II regions known. (Copyright © Australian Astronomical Observatory; photograph by David Malin from AAT plates)

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from article Magellanic Clouds

Small Magellanic Cloud. This image is composed from two images of the Digitized Sky Survey 2. (ESA/Hubble; Digitized Sky Survey 2)

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from article Magellanic Clouds

Large Magellanic Cloud. (Harvard Observatory photograph by P. Hodge)

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from article Magellanic Clouds

Giant gas cloud centered on 30 Doradus in the Large Magellanic Cloud. (Cerro Tololo Inter-American Observatory photograph by P. Hodge)

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from article Parasympathetic nervous system

Overview of parasympathetic pathways of the human autonomic nervous system. Preganglionic axons from the brain and spinal cord innervate the viscera in the head, neck, and trunk. (Copyright © McGraw Hill)