I wouldn't recommend Huntington. Way to crowded. Rent a car and go to Laguna beach. ask where crescent bay or shaw's cove is. water is warm now-- 72 degrees. those beaches have good snorkeling and don't tend to be as crowded. also, If you have time, I would look into pageant of the masters that happens nightly in Laguna. this year's theme "the pursuit of happiness" was a really good show. There is a Ruby's in south laguna that sits right on PCH. you can eat roof top and have a 180 degree ocean view. If you want the long white sand beaches go to balboa (by Newport beach) and go all the way past the balboa pier. another spot that tends to not be as crowded during summer. have fun.