Where can I buy fresh oysters in London, Ontario?

I would like to purchase fresh oysters, this is the main thing, as well as other seafood, fresh, from local small markets in London, Ontario. I don’t want to get stuff from Costco, Superstore, Loblaws, etc. I want to buy from small businesses and at a good bargain price. Please give me some suggestions, based on places you have actually been to and purchased. It has to be fresh and not previously frozen.

Doesnt the covent garden market have something ?