Oceans impact human health in many ways, such as through consumption of contaminated seafood, exposure to waterborne pathogens, and through contact with marine mammals. West Coast Center scientists are investigating the sources, transport, and fate of harmful pathogens, biotoxins, and toxic chemicals in seafood under changing ocean conditions and human/land-use activities. Through this research, we will be able to develop early warning systems to better predict where outbreaks may occur, as well as develop methods to reduce or eliminate threats to human health, such as by using molecular techniques or applying post harvest treatments to seafood.