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 ...

Zooplankton are one of the most diverse and abundant groups of organisms on Earth and they play an essential role in the marine food chain. Unable to photosynthesise, as phytoplankton do ...

Through one of the primary carbon storage mechanisms, the biological carbon pump, phytoplankton (microscopic marine plants at the bottom of the oceanic food chain) take up CO 2 in the surface ocean ...