River Herring come from the sea to spawn, while American Eel spend most of their lives in Eastham ponds before making their way to the Sargasso Sea and their spawning grounds.

As the MA Division of Marine Fisheries Senior Biologist and Project Leader with the Diadromous Fish Biology and Management Project, Brad Chase has worked with diadromous (sea-run) fish for over 30 years, focusing on river herring, rainbow smelt and American eel.  Brad also serves as the Massachusetts representative on the Atlantic States Marine Fisheries Commission’s technical committees for American Eel, River herring and Shad, and Fish Passage.  Closer to home, Brad is the Chair of the Harwich Conservation Commission.