Major Findings
• The extent of significant mercury contamination is ubiquitous in marine and freshwater ecosystems around the world.
• Biological mercury hotspots are globally common and can be related to human-generated mercury releases to air, land, and water from multiple point and nonpoint source types.
• Fish samples from around the world regularly demonstrate mercury concentrations exceeding human health advisory guidelines based on the U.S. Environmental Protection Agency (EPA) reference dose. This translates to 84 percent of total samples were above the level at which one meal per month is recommended.
• Hair samples from around the world regularly demonstrate mercury concentrations exceeding fish consumption advisory levels based on the U.S. EPA reference dose, which translates to 82 percent above the guidelines
http://www.briloon.org/uploads/documents/hgcenter/gmh/gmhFullReport.pdf