RE: Neglected species of filter-feeding creatures that can purify our water and feed a billion people.
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The one disadvantage of shellfish is that they contain the toxins that they filter out. e.g. if the water is high in mercury, then the shellfish are high in mercury.
The biggest fear is with red tide which can produce a neuro-toxin. The key to promoting shellfish is rigorous testing and reporting on the health of the critters.
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I read once that it depends of the shellfishes, for example oysters don't grow in polluted waters, different from most of mussels
Yes, you're right
Thank you for stopping by. Science is teasing daily to show how safe this species are before consumption. But like you said, individuals must be extremely careful to know how their source.