Which larger predatory fish often carry higher mercury loads?
Answer
Swordfish, shark, king mackerel, and tilefish
Mercury contamination levels tend to be elevated in fish that occupy higher trophic levels in the marine environment. Specifically, larger, older predatory fish have had longer lifespans during which they consume numerous smaller contaminated organisms, leading to bioaccumulation of mercury in their tissues. Fish known to carry these higher mercury loads, which advises less frequent consumption, include swordfish, shark, king mackerel, and tilefish. These specific species pose a greater risk and require careful moderation in the diet of susceptible individuals.
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