Livewell

Contaminant

Selenium

An essential trace element that is toxic in excess.

What it is

Selenium is needed in tiny amounts but becomes harmful at higher doses. It enters water from mining, irrigation of seleniferous soils, and coal/oil combustion, and bioaccumulates in fish. Chronic overexposure (selenosis) can cause hair and nail loss, skin rashes, and nervous-system effects. It does not cook or trim away.

Cleaning and cooking will not help

Trimming, skinning, and cooking won't lower it — it's stored in the muscle. Reduce exposure by eating smaller, younger fish and fewer meals.

How to prepare it

  • Trimming and skinning won't help — this settles in the muscle you eat, not the fat.
  • Cooking doesn't remove it either; a fillet carries the same amount cooked or raw.
  • Eat smaller, younger fish — they carry less.
  • Follow the meal limits above and space your meals out across the month.

Waters with Selenium advisories

18 waters across 3 states.