Identified ... THANKS everyone!! I've edited my original post below to show the id's.
I've been looking through the picture folders on my laptop and came across these cacti photos I took when vacationing in San Diego, California. Wonder if anyone recognizes them?
1.
Candelabra Tree (Euphorbia ingens) Wacky Cactus, photo taken at Balboa Park, San Digeo 1/12/2015
2.
Chollas (Cylindropuntia) Spiny Cactus, photo taken at Point Loma area, San Diego 1/9/2015
3.
Prickly Pears (Opuntia) maybe O. phaeacantha? Photo taken at Balboa Park, San Diego 8/16/2013
4.
Euphorbias (Euphorbia) Opuntia? Photo taken at Balboa Park, San Diego 1/12/2015 and it's the only picture I have.