Mercury is present in seawater in small quantities. It gets into the marine food chain starting at the very bottom, absorbed by microscopic algae. Larger, carnivorous species like sharks and ...

A perfectly simple food chain. And we can see food chains happening ... food chain involves over thirty organisms found in the deep ocean. Human activities like deforestation, pollution, and ...

Levels of lead and other heavy metals spiked in L.A.’s coastal waters after the January fires, raising serious concerns for the long-term health of the marine food chain.

"Most of these metals are easy to transfer through the ... "Species at each level of the food chain, from invertebrates to fish, birds, marine mammals and humans, can be affected differently ...