I am a runner and using swimming (right now) mostly for crosstraining, please don't hurt me. :D I know what these different zones are for running, but I don't know how they would correspond to actually swimming (putting them in practice). For runners, at least in the basic plan I'm following (Lydiard), you are not supposed to do any anaerobic training in your base phase (which I'm in), or very very little. I want to make sure that I am not going into anything more intense than LT, or at least be knowledgeable of what it takes to go into each zone.
I must add - I love swimming, I am thinking of maybe doing a triathlon one day or perhaps joining a club.
Thanks for the help!
-x