Where is the best place to get scuba certified if you live on the Peninsula?

Welcome to Fluther.

The shortest answer to your question is “in a heated swimming pool”. But I suspect that you want more than that, like a “by whom?” Maybe someone here can answer that exact question for you, but I’d be more inclined to take the word of friends or even recommendations out of the phone book or a Yellow Pages search in G**gle for the geographic area of your interest.

I“m Padi certified. I like them better than Naui.

Check your yellow pages. Then check with YELP or other critic sites.

PADI has a dive shop locator That should be a start.