The reasons for their decline is unknown, but it's likely environmental contaminants such as pesticides are harming the creatures via their highly permeable skin, he said.

它们锐减的原因还不确定，不过有可能是环境污染物，比如说农药，通过它们高渗透性的皮肤来危害这些生物。

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However, efforts to mitigate other stressors, such as by reducing contaminants and noise pollution, could be tried and thus aim to reduce their environmental stress levels.

但是，依然要致力于缓解其他生存压力，比如减少污染物及降低噪声无言，也能够尽力达到降低鲸鱼生长环境压力水平的目的。

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Because phenolic contaminants take on great toxicity which could cause cancer, abnormality and sudden change, many environmental researchers attach importance to them.

由于酚的毒性大，并具有致癌、致畸，致突变的潜在毒性，近年来引起了环境研究者的重视。

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The researchers ruled out radiation as a possible cause of the apparent sex reversal but suggested environmental contaminants that mimic hormones or water temperature changes could be the culprits.

CNN: Something's fishy with chinook salmon

An environmental remediation team could use qPCR to count the population of specific contaminant degrading microbes, or to assess the genetic biochemical pathways (e.g. microbial cellular machinery) that cause the degradation of environmental contaminants.

FORBES: Guest post written by Aaron Peacock

"The benefits of cardiovascular health from eating seafood, including farm fish, far outweigh the risk of cancer from environmental contaminants, " said Dr. William Hogarth of the National Oceanic and Atmospheric Administration, the group that commissioned the report.

CNN: Seafood benefits outweigh risks, government says