Tag: Aquatic food chain

According to the World Health Organization, mercury is considered one of the top ten chemicals of major public health concern. Fish are a primary source of exposure to methylmercury for humans, yet many wonder: why are fish full of mercury? This happens primarily due to a natural process called bioaccumulation, which concentrates the toxin as it moves up the aquatic food chain.

Scientists have demonstrated that a fish's primary source of vitamin D comes from its diet, originating largely from plankton. This discovery challenges older assumptions and sheds light on how these aquatic vertebrates meet their nutritional needs, revealing the sophisticated pathways behind how fish get vitamin D.