|  Plunging wave at Bandon, OR
 |  Barrier beach and stack, Big Sur, CA
 |  Wave refraction on Green Bay headlands, Peninsula State Park, WI
 |  Cobble beach at Otter Cliffs, Acadia National Park, ME
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|  Wave cut bench, Point Fermin, CA
 |  Stacks at Ruby Beach, Olympic National Park, WA
 |  Stacks undercut by wave activity are exposed as tide ebbs, The Rocks Provincial Park, New Brunswick, Canada
 |  Stacks, Samuel Boardman State Park, OR
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|  Sea cliff and wave cut bench, Shore Acres State Park, Coos Bay, OR
 |  Small sea arch, Point Loma, CA
 |  Sea arch and stack, Natural Bridges State Beach, Santa Cruz, CA
 |  Cuspate beach, Pt. Reyes National Seashore, CA
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|  Black sand beach, Kalapana, HI
 |  Rip current, Picture Rocks National Lakeshore, MI
 |  High Tide at the Bay of Fundy, The Rocks Provincial Park, New Brunswick, Canada
 |  Low tide at the Bay of Fundy, The Rocks Provincial Park, New Brunswick, Canada
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|  Groins and breakwaters along Lake Michigan shoreline, Lake Forest, IL
 |  Groins along the Lake Michigan shoreline, Lake Bluff, IL
 |  Beach and sea cliffs at Point Reyes National Seashore, CA
 |  Shell accumulation on a beach after a storm, Sanibel Island, FL
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|  Beach sediments comprised of shell fragments along the Gulf Coast, Clearwater Beach, FL
 |  Iron coated quartz and K-feldspar comprise most of this beach  sand along the Lake Superior shoreline, Presque Isle, MI
 |  Glassy cinder fragments comprise a black sand beach, Kalapana, HI
 |  Olivine is a major component of a green sand beach, Kapoho HI
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|  Spouting horn, Poi Pu Beach, Kauai, HI
 |  Spilling waves, Winthrop Harbor, IL
 |  Tidal Bore on the Petticodiac River, Moncton, New Brunswick, Canada
 |  Rip rap used to reduce cliff erosion, Point Loma, CA
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|  Concrete rip rap, Winthrop Harbor, IL
 |  Constructive interference of incomiing waves and rebound wave, Illinois Beach State Park, IL
 |  Stack and arch, Second Beach, Olympic National Park, WA
 |  Seastars  and kelp, Bandon Beach State Park, OR
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|  Tombolo, Acadia National Park, ME
 |  Pholad borings, Pt. Fermin, CA
 |  Sea cliffs along the coast at Big Sur, CA
 |  Jetties at Waukegan Harbor,  Waukegan, IL
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|  Ebb tide at Bandon Beach, Bandon, OR
 |  Sunrise at Face Rock, Bandon Beach, Bandon, OR
 |  Bandon Beach sunset, Bandon, OR
 |  Ecola Beach State Park, OR
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|  yellow lupines-2-Edit.jpg
 |  Bandon Beach in the early morning, Bandon, OR
 |  Foreshore and backshore berm, Paliholi Beach, Kauai, Hawaii
 |  Concretions in sandstone, Coos Bay, OR
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|  Second Beach at Sunset, Olympic National Park, WA
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