Over 80 percent of the tuna sold in the US comes from unsustainable, destructive sources. Washington, DC – In its first-ever US canned tuna ranking, Greenpeace found that the vast majority of the tuna sold in the American market fails to meet fundamental sustainability standards.

List of 5 Tuna Brands to Avoid. Due to unsustainable practices, health concerns, and high mercury levels, the worst tuna brands are Starkist, Bumblebee, Chicken of the Sea, Kirkland, and Walmart’s tuna. 1. Starkist. Starkist is owned by one of the largest shareholders in the US. However, Starkist itself is a very popular brand.

Greenpeace USA has released its second-ever canned tuna ranking, finding that a number of U.S. retailers have made “significant progress toward offering consumers more sustainable and ethical products,” according to the NGO’s guide.

The Costco Kirkland tuna is ranked as one of the worst canned tuna brands by the Greenpeace environmental organization. It is not a sustainable brand and is generally known for unfair, unethical, unsustainable fishing and production practices.