President Micheal D Higgins has paid tribute to Dick Warner, who has died.
President Higgins described Warner as a dedicated environmentalist and a wonderful filmmaker.
"It is with great sadness that I have learned of the death of Dick Warner.
"He was a dedicated environmentalist as well as a wonderful filmmaker, and his beautiful work on the canals of Ireland was outstanding.
"Only last month, at an event celebrating the 200th anniversary of the opening of the Royal Canal, I referred to his dedication and skill in describing the rich heritage of our inland waterways.
"Sabina and I wish to express our sympathy with his family and wide circle of friends."
Mr Warner was best known for his waterways documentaries on TV and had a career in media for over 40 years.