http://www.lasvegassun.com/sunbin/stories/thrive/2006/jul/11/071104664.htmlWASHINGTON (AP) - Many imports of canned tuna have mercury levels higher than the federal limit, according to analysis by an environmental group.
Defenders of Wildlife found the highest levels of mercury in tuna from Ecuador and Mexico - countries known for setting nets where they see dolphins to catch large tuna swimming below.
"They tend to catch larger, more mature fish, which tend to have higher levels, being at the top of the food chain," said Bob Irvin, the group's senior vice president for conservation.
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The group had a laboratory test 164 cans of tuna labeled as being from Ecuador, Mexico, Costa Rica, Thailand, Malaysia, the Philippines and the United States. Tests were done by New Age/Landmark laboratory, a Benton Harbor, Mich., company that has been used by the federal government.
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