China says it will impose a 25 per cent tariff on Canadian seafood exports effective March 20 as a retaliatory measure to Canadian tariffs on steel, aluminum and electric vehicles last year. Geoduck harvester Darrell Thomas discusses how the tariffs could impact his business. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and in-depth coverage: http://bit.ly/1Z0m6iX Follow CBC News on TikTok: https://bit.ly/