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New Zealand, Nelson, Pakawau Beach, washed ashore, collected December 1968, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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New Zealand, Bay of Plenty, Coromandel Co., Coromandel Peninsula, Kereta, by fishing, collected 1971, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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South Africa, Eastern Cape, Port Elizabeth, Hougham Park, washed ashore, collected July 1990, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Ocean quahog from the North Sea. This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Removed (already dark) background. 9 April 2007
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Barbados, midwest coast, off Holetown area, silty sand, by dredging, at 200 m depth, collected September 1988, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Philippines, collected September 1992, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Greece, Ionia Nisia, Lefkada, Gulf of Amvrakikos, Vonitsa, at 3 m depth, collected July 1999, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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United States, California, Coronado, low tide, collected 1976, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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New Zealand, Bay of Plenty, Coromandel Co., Coromandel Peninsula, Kereta, by fishing, collected 1972, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Australia, Queensland, Dingo Beach, low tide, burried in sandbar, collected 1990, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Finding place: Portugal, Algarve.
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United States, Florida, low tide, sand flats , at 0-2 m depth, collected 1978, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Indian Ocean, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker.
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Greece, Voreio Aigaio, Chios, Karfas, at 2 m depth, collected August 1996, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Philippines, Central Visayas, Cebu, Mactan Island, Punta Engaño, by trawling, collected 1984, ex coll. J.G.B. Nieuwenhuis. Image by Joop Trausel and Frans Slieker
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New Zealand, Nelson, Rabbit Island, washed ashore, collected 1987, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Japan, Kôchi, Kashiwajima, sand-gravel bottom, by trawling, at 10-100 m depth, collected 1959, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Greece, Ionia Nisia, Zakynthos, Laganas, beached after storm, collected October 1994, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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South Africa, Western Cape, Mossel Bay, littoral zone, collected February 1974, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Rab (croatia)
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Egypt, Janub Sina’, Ras El Burka, sand , at 1-2 m depth, collected 1985, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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New Zealand, Bay of Plenty, Coromandel Co., Coromandel Peninsula, Whitianga, on sandy bottom, in shallow water at low tide, collected December 1988, ex coll. Natuurmuseum Enschede. Image by Joop Trausel and Frans Slieker
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Philippines, Central Visayas, Bohol, collected May 2011, ex coll. F.J.A. Slieker Jr.. Image by Joop Trausel and Frans Slieker