Fish and Wildlife Research Institute

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Water Quality and Contaminants

FWRI staff monitor changes in water quality and levels of contaminants, including mercury in fish, in Florida's fresh waters.



Dissolved Oxygen Levels in Florida Freshwater Bodies

View this Flickr photo set.

Mercury Testing

Since 1983, the FWC has actively investigated the occurrence of mercury in Florida's freshwater and marine environments.


FWC Facts:
Scientists can determine the age of a fish by counting growth rings, similar to growth rings of a tree, on otoliths, the “inner ear bones” of fish.

Learn More at AskFWC