Optional, and separate from Garmin. Your swims save to Garmin Connect on their own. Connect Strava too and they post there with the set name instead of "Lunch Swim".
Share your swim
With Strava linked, every swim becomes a card like this. Find it, and a crossing card, on the new Stats tab, ready to post.
New to distance swimming?
Zero to 1K is a free 8-week plan, from a few lengths to swimming a kilometre without stopping.