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Wild Fish

Pollution & Disease


Habitat Damage


School of southern bluefin tuna in a tuna fishery tow cage

Keeping Wild Stocks Wild

When fish or shrimp are kept in pens or ponds that are connected to natural waterbodies, some can escape. This isn't as harmless as you might think. In some cases, escapees can impact wild populations by competing with them for food, habitat and spawning partners.

Unwelcome Visitors

Most farmed species are distinctly different than their wild cousins. If escapees breed with their wild counterparts, the genetic makeup of their offspring may be less suited to surviving and thriving in the wild. In addition, fish are sometimes farmed in areas they are not native to. If they escape, they can establish themselves as invasive species and disrupt the harmony of the ecosystem.

What You Can Do

Search for Sustainable Seafood

Salmon is one of the most commonly-eaten fish in the world, but did you know that most farmed salmon is on the "Avoid" list? Wild-caught salmon is generally a "Best Choice" or "Good Alternative," and there are a few similarly-sustainable farmed salmon options, so try to find out where your salmon comes from.

Use Our Consumer Guides

Our printable guides are broken down by region so you can find ocean-friendly seafood wherever you live or travel. Choose from the green "Best Choice" column. Otherwise, try a yellow "Good Alternative."


Story of Hope

Making Responsible Seafood Purchasing the Norm

Sustainably caught and farmed seafood is no longer just a niche market; it's become a priority for mainstream retailers, restaurants and food service operators.

Two of the largest food service companies in the U.S., Compass Group North America and ARAMARK, have made sustainable seafood commitments through agreements with the Monterey Bay Aquarium. Several leading supermarket retailers in the U.S. now have sustainable seafood sourcing policies in place; others will likely follow suit.

Learn about wild seafood Related ocean issue resources