I've been flying to San Diego twice a week recently and have noticed that there are usually a lot of kayaks and some people snorkeling off the coast of La Jolla. Turns out they're exploring the Seven Caves and the La Jolla Underwater Park, where there are a variety of marine life including garibaldi, leopard sharks and sea lions.
For more information on the La Jolla Shores and the Seven Caves, please visit: www.sandiego.org/what-to-do/beaches/la-jolla.aspx
See more photos here