This guide provides information about how far you need to be from marine mammals when viewing them in Canada. It also outlines illegal actions including, swimming or interacting with a marine mammal; moving a marine mammal (or enticing/causing it to move); separating a marine mammal from its group or going between it and a calf.
http://www.dfo-mpo.gc.ca/species-especes/mammals-mammiferes/watching-observation/index-eng.html
