Mission Bay Beach
The sea was too cold for us (not so for the locals) but we got plenty of cool sandcastles done, and played with some other kids we saw. Then we headed for the more serene La Joya to scoot around for a bit and run around in the park. Right off one of the beaches was a colony of sea lions but we didn't investigate - I think we have seal and sea lion fatigue. The tightrope walker was way more interesting.