 Prickly pears cactus near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
 Ruins near Fishing Beach. Sandy Hook, New Jersey, March 11, 2007
 North Beach. Sandy Hook, New Jersey, March 11, 2007
 Sandy Hook Lighthouse, view from Hudson Drive. Sandy Hook, New Jersey, March 11, 2007
 View of Manhattan from North Beach. Sandy Hook, New Jersey, March 11, 2007
 Dead trees on dunes of North Beach Sandy Hook, New Jersey, March 11, 2007
 Keepers quarters and Sandy Hook Lighthouse, view from Hudson Drive. Sandy Hook, New Jersey, February 11, 2007
 View of Sandy Hook Bay and Sandy Hook from Mount Mitchill Scenic Overlook. Atlantic Highlands, New Jersey, April 22, 2007
 Sandy Hook Lighthouse and keepers quarters, view from the west. Sandy Hook, New Jersey, February 11, 2007
 Sandy Hook Beach D near Visitor Center. New Jersey, February 11, 2007
 Sand dunes of North Beach. Sandy Hook, New Jersey, February 11, 2007
 A tree on dunes of north beach in Sandy Hook. New Jersey, April 22, 2007
 Nike Missiles at the entrance of Fort Hancock Historic District. Sandy Hook, New Jersey, March 11, 2007
 Parade Ground and barracks, view from Guardian Park road. Sandy Hook, New Jersey, March 11, 2007
 A house in north part of Fort Hancock Historic District, view from Kearney Road. Sandy Hook, New Jersey, March 11, 2007
 A tree on northern tip of Sandy Hook. New Jersey, April 22, 2007
 Prickly pears cactus in snow near a road between White s City and Carlsbad Caverns. New Mexico, December 26, 2007
 A pier in the area of US Coast Guard in Sandy Hook. New Jersey, April 22, 2007
 A tree in the area of US Coast Guard in Sandy Hook. New Jersey, April 22, 2007
 One of barracks in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 Frozen bay from Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 View of Brooklyn NY from a trail north from parking area M. Sandy Hook, New Jersey, February 11, 2007
 Barracks around Parade Ground in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 A balcony of a barrack at Magruder Road in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 Purple spineless prickly pears cactus in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Magenta tinged prickly pears cactus on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 El Capitan Mountain with prickly pears cactus in foreground, view from upper Roadside Park. Guadalupe Mountains National Park, Texas, December 28, 2007
 Prickly pears cactus on a small ridge near Juniper Canyon Trail south from Upper Juniper Spring. Big Bend National Park, Texas, November 22, 2007
 Shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium in Independence. Texas, March 22, 2009
 Spotted cucumber beetle (Diabrotica undecimpunctata) on a shoot of prickly pears cactus in Ladybird Johnson Wildflower Center. Austin, Texas, March 7, 2009
 Dry pad skeleton of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Prickly pears (sabra) cactus on the roadside in Nizzanim. The Middle East, July 19, 2001
 Flower bud of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Prickly pears cactus on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Snail feeding on a fresh young pad of prickly pears cactus (Opuntia) in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Prickly pears cactus (known as sabra in Israel) in downtown Beer-Sheva, at intersection of Rager and Tuvyahu Street. The Middle East, February 18, 2000
 Blooming prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Dried sap of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 8, 2009
 New growth of prickly pears cactus (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 1, 2009
 Sprout of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
 Blooming Prickly pears (Opuntia) cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 26, 2009
 Emerging sprout (new pad) of prickly pears cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 6, 2008
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) with fleshy, green, leaf-like phylloclades in Antique Rose Emporium. Independence, Texas, April 19, 2009
 Prickly pears near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 Prickly pears and yucca near El Capitan Trail. Guadalupe Mountains National Park, Texas, December 27, 2007
 A bronze sculpture of Henry Moore "Oval with Points" (zoomed) near East Pyne Hall in Princeton University. Princeton, New Jersey, March 1, 2007
 A beach under Garden Pier. Atlantic City, New Jersey, March 24, 2007
 The beach boardwalk and Bally s Casino, view from a mall overpass. Atlantic City, New Jersey, March 24, 2007
 The beach boardwalk, view to south-west from a mall overpass. Atlantic City, New Jersey, March 24, 2007
 A canada goose (zoomed) nesting on a trail near Carnegie Lake in Delaware and Raritan Canal State Park. Kingston, New Jersey, April 18, 2007
 Young pad of prickly pears (Opuntia) in Antique Rose Emporium. Independence, Texas, March 31, 2020
 Prickly pear cactus on Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
 Yachts on a beach in Ventnor City. Atlantic City, New Jersey, March 24, 2007
 A beach boardwalk in Ventnor City. Atlantic City, New Jersey, March 24, 2007
 Catamarans on a beach in Ventnor City. Atlantic City, New Jersey, March 24, 2007
 Purple-tinged prickly pear cactus in the middle part of Smokey Creek Trail. Big Bend National Park, Texas, November 25, 2007
 Purple-tinged prickly pear cactus on Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Cactus coreid bug Chelinidea vittiger on a pad of prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 12, 2008
 Cactus coreid bug Chelinidea vittiger nymph on a pad of prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 29, 2008
 Nymphs of cactus bug Chelinidea vittiger feeding on prickly pear cactus in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2021
 Prickly pear cactus (Opuntia) in Dahl Al Hamam Park at Al Markhiya Street. Doha, Qatar, March 21, 2016
 Redeye prickly pear cactus (Engelmann prickly pear, Opuntia phaeacantha var. discata) on Savanna Meadow Trail in Ladybird Johnson Wildflower Center. Austin, Texas, May 10, 2009
 Nymphs of cactus bug Chelinidea vittiger feeding on prickly pear cactus (discolored areas of opuntia is the result of punctures) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, May 11, 2008
 Elk on a sandy bar at low tide in French Beach (42 km Beach), on north-eastern coast. Qatar, March 4, 2010
 Sand ripples on a sandy bar at low tide in French Beach (42 km Beach), on north-eastern coast. Qatar, March 4, 2010
 Rippled texture of a sandy bar at low tide in French Beach (42 km Beach), on north-eastern coast. Qatar, March 4, 2010
 Blooming prickly pears (Opuntia) in Lick Creek Park. College Station, Texas, May 4, 2023
 "Arabic calligraphy" made by creeping sea worms on a sandy bar at low tide in French Beach (42 km Beach), on north-eastern coast. Qatar, March 4, 2010
 Dwarf rosette lichen Physcia neogaea on a dry pad of prickly pear cactus (Opuntia) in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
 Dwarf rosette lichen Physcia neogaea on a dry pad of prickly pear cactus in prairie in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
 Young pads of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Close-up of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Top view of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Pads of prickly peas cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Slender orange-bush lichen (Teloschistes exilis) together with Parmotrema and Physcia on an old pad of prickly pear cactus in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
 Prickly pear cactus on a mural "500 Anos de Resistencia" by Salvadoran artist Isaias Mata (1992) on 24th Street in Mission District of San Francisco. California, March 16, 2024
 Prickly peas cactus (Opuntia) with yellow Senecio(?) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Yellow flowers of prickly pears (Opuntia) in Birch Creek Unit of Lake Somerville State Park, Texas, April 29, 2012
 Tender young pad or nopalitos of prickly pear cactus (opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 31, 2009
 Prickly pears in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 16, 2011
 Pad of prickly pears (Opuntia) with a bug in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 A stream. Delaware Water Gap, New Jersey, March 3, 2007
 Pad of prickly pears in a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 8, 2012
 Prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 3, 2022
 Prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 21, 2020
 Yellow flowers of prickly pears (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Institute for Advanced Study. Princeton, New Jersey, March 7, 2007
 A house at 104 Mercer Street. Princeton, New Jersey, March 7, 2007
 Jefferson(?) Road in snow. Princeton, New Jersey, March 7, 2007
 A house at 89 Battle Road. Princeton, New Jersey, March 7, 2007
 Houses on Hamilton Street. Princeton, New Jersey, March 7, 2007
 A mill on MillStone River. Kingston, New Jersey, March 20, 2007
 Houses on Moore Street. Princeton, New Jersey, March 7, 2007
 Fruits of prickly pears (Opuntia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 29, 2009
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