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Small fish including anchovies and sardines ingest the toxic algae, which then bioaccumulate in larger marine mammals that eat the fish.

“There’s a layer of heavy metals now on the soil, and I don’t know what’s going to happen. Is it going to be washed away? Is it going to penetrate to the groundwater? Is it going to concentrate and bioaccumulate?” he said.

“It’s really concerning when you think about flame retardants, because they’re known to bioaccumulate in our bodies,” she said.

A group of fluorinated chemical compounds, they are resistant to degradation, bioaccumulate in tissues, and are highly mobile in the environment.

Mercury is one of the most toxic elements in marine systems and can bioaccumulate and biomagnify through marine food webs.