Fluoridation and the Environment
FLUORIDATION AND THE ENVIRONMENT by Howard J. Patterson, MEM (2013). Running time 31:05 minutes. Patterson devotes a substantial part of the video to environmental issues, including an explanation of the Damkaer & Dey findings on low concentrations of fluoride inhibition of salmon spawning.
Created for the 2013 Clean Water Portland campaign, Fluoridation and the Environment is the single best video introduction to fluoridation issues, including environmental concerns, all in about half an hour.