List of Safer Tuna -
Environmental Group Says Mercury Levels High in Tuna Caught in Ecuador
and Mexico - Trader Joes and Dolphin Safe Best
July 12th 2006
Can of Tuna
The environmental group, Defenders of Wildlife, says that canned tuna
from Costa Rica, Ecuador and Mexico can contain mercury levels 30
percent to 50 percent higher than the federal limit. It is believed
that larger fish have more mercury because they are older and have been
exposed to the substance longer.
Tuna caught in Thailand and the United States have less mercury because
the fishing is usually done in “dolphin safe” conditions. This type of
fishing is more likely to net smaller tuna with less mercury.
The canners in Mexico and Ecuador usually buy from fishers who drop
their nets near schools of dolphins. This usually assures they get the
larger / older Tuna. These tuna usually have the higher levels of