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FOR EDUCATORS

LESSON PLANS & ACTIVITIES

Sustainable Seafood

The Ocean Portal Team

David Barouh displays fresh fish for sale at Seattle’s Pike Place Market.

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As a consumer, you can choose what kinds of seafood to buy. Some species are in good supply and make excellent choices. Others have declined dramatically due to overfishing or environmental factors. Choosing those can add to the problem.

So choose wisely. Buy sustainable seafood—seafood harvested in a way that supports productive fisheries and coastal communities and also maintains healthy ecosystems.

Science & Technology

Could you be eating endangered tuna at your favorite sushi place and not know it? Find out how DNA barcoding can help identify exactly which species are being sold and served. Plus, a look at the pluses and minuses of fish farming as well as devices that help reduce “bycatch”— marine animals that are unintentionally trapped and killed in fishing gear.

Research

Nearly 4,600 of the more than 29,000 known fish species have been barcoded so far.

Credit:

NOAA

Barcodes for Fish?

Like this Atlantic cod (Gadus morhua), every fish species has a distinct sequence of genes in its DNA. This genetic information enables scientists to create barcodes for fish—very similar to the barcodes scanned when you check out at the grocery store. The fish barcodes include valuable information like the name of the species and where it came from. Scientists are currently using museum specimens to build an electronic database of fish barcodes. It will help differentiate between closely related species, protect endangered species, and sustain populations. Eventually the barcodes might be used to help consumers like you. For example, they could verify that the fish you’re served in a restaurant is actually what you ordered.

Threats

These statistics come from a 2007 United Nations Food & Agriculture Organization review.

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The Need to Act

During the 1950s, the United Nations Food and Agriculture Organization began collecting statistics about fisheries. At that time fishing on an industrial scale began in earnest -- fishing boats carried more sophisticated equipment and used it to capture larger and larger numbers of fish and shellfish. Their success is reflected in the latest statistics. Since the 1950s, 29% of commercial fish species have suffered collapses. Entire fishing industries, including the cod industry in Nova Scotia, have disappeared. Many species, such as the bluefin tuna and marlins, are on the brink of extinction. Even birds and mammals that feed on fish, including humpback whales in Canada's Bay of Fundy, are feeling the impact.

Solutions

So what’s the answer? What can we do? Learn more here about sustainable consumer choices, cooking and recipes, and how to “look for the label” of one of the many available seafood labeling programs that can help you learn more about making the most sustainable seafood choice.

How You Can Help

Sablefish are among the many delicious and sustainable seafood choices.

Credit:

Chip Clark / Smithsonian Institution

How You Can Help

Are you concerned about overfishing and other threats to ocean fish? Do you want to become part of the solution? Even as an individual consumer, there are plenty of things you can do. For a start, you should avoid eating certain kinds of fish and shellfish that are fished using unsustainable methods, or are known to be facing population losses. There are plenty of tasty alternatives to these fish, including smaller fish that are lower on the food chain (such as anchovies and sardines), local sustainably caught fish and shellfish, and simply becoming a more informed consumer can help you to make more sustainable choices.

There are several guides available that can help you make responsible, ocean-friendly choices - at home, at the grocery store and while eating out:

TAGS:

Human impacts, Fisheries, Aquaculture

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Seafood is famous among

Seafood is famous among people and they are also recommended because they contain essential nutrients. But choosing proper seafood is important by observing the labels carefully. Some species of fish are endangered but for profit making they are killed. It is our responsibility to avoid eating such food and lessen overfishing. We can also do campaigning for saving such foods.

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Seafood is famous among

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