This is why some things are restricted I believe.
1 person taking something versus 100,000 people taking something adds up.
http://en.wikipedia.org/wiki/Plymouth_Rock
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During the Rock's many journeys throughout the town of Plymouth numerous pieces of the Rock were taken, bought and sold. Today approximately 1/3 of the top portion remains. It is estimated that the original Rock weighed 20,000 lb. Although some documents indicate that tourists or souvenir hunters chipped it down, no pieces have been noticeably removed since 1880. Today there are pieces in Pilgrim Hall Museum as well as in the Patent Building in the Smithsonian
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When I was in Aruba I was told they have an ordinance against taking too many shells and stuff like that, they were losing zillions of pounds of shells, etc a year.
