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Facts on Fish - Coggle Diagram
Facts on Fish
Sustainable Alternatives
Alaskan salmon.
American catfish.
Pacific cod.
Farm-raised fish and shellfish.
Chemicals in Seafood
Mercury
Toxic chemical found naturally in nature.
Also comes from human activities:
Pesticides.
Burning garbage.
Fossil fuel emissions.
PCBs (Polychlorinated Biphenyls)
Man-made chemicals.
Used in industries until 1977.
Released into air and water.
How Chemicals Reach Fish
Chemicals attach to particles.
Microorganisms consume the particles.
Small fish eat microorganisms.
Large fish eat smaller fish.
Chemicals accumulate through the food chain.
Health Risks
Fish to Avoid
High levels of mercury and PCBs:
Shark.
Swordfish.
King mackerel.
Tilefish.
Recommendation
Children under 15 should avoid these fish.
Overfishing and Fish Farms
Problems
Some fish are caught too often.
Fish populations cannot recover.
Some fish farms damage the environment.
Species at Risk
Red snapper.
Atlantic salmon.
Bluefin tuna.
King crab.
Main idea
The consumption of fish can be healthy, but there are risks related to chemical contaminants and overfishing.