Dog Beach is sometimes referred to as "North Beach" by the locals. It is pure delight for your canine companions as they can run free from October to May. Leash laws are enforced in the City of Del Mar during the summer months.
Most of the folks you see here are throwing frisbees, sticks, or balls for the pooches to retrieve.
Parking is metered and the City of Del Mar gets huge revenues from the parking meters and fines that come from non-compliance. They are hawkish in its enforcement so bring quarters if you plan to come to Dog Beach.
The crowd is a law respecting dog-owner crowd and unacceptable behavior is punished by the De Mar Lifeguards. The City of Del Mar offers free poop scoop mitts for you to clean up after Fido.
FROM Interstate 5, take the Via de la Valle exit west to Coast Highway (about one mile), turn South on Coast Highway, Dog Beach will be 250 yards on your right.
I found this video on YouTube that gives you a 20 second glimpse of Dog Beach in Del Mar.