 To remove these contaminants from the sediment, species of seaweed can be added to take up these contaminants in their plant tissues that could be removed and taken to a contained area where the contamination is benign to the surrounding environment.Oyster predators include starfish, oyster drill snails, stingrays, Florida stone crabs, birds, such as oystercatchers and gulls, and humans.Pathogens that can affect either farmed "C. virginica" or "C. gigas" oysters include "Perkinsus marinus" (Dermo) and "Haplosporidium nelsoni" (MSX).