If you are lucky enough to live in the migratory path of 20,000 gray whales, take advantage of witnessing these giants as they pass by the Pacific Coast shoreline. The peak of their southern migration usually occurs in mid-January and the peak of the northern migration is in mid-March. Cows with their calves (typically born mid-January to mid-February) are sometimes seen close to shore in late April and early May.
Here are a couple of resources that may be of interest:
http://losangeles.cbslocal.com/guide/a-guide-to-whale-watching-in-southern-california/
https://www.yelp.com/search?find_desc=whale+watching&find_loc=Orange+County%2C+CA