Thanks. That's unfortunate they are endangered. I remember time team had some eel fisherman go about and demonstrate how they use to catch them. I think I remember them saying how people of the fens had a specific culture and that after most of the fens were drained, their culture and eel fishing mostly died out. There is also the story of king charles and the feather. Supposedly people of the fens had a tradition where if you presented a fen man a goose feather( I think) they would guide you, feed you, and ferry you to safety without questions.