snorkel vacation in Mexico?

My husband and I are not divers, but really enjoy snorkelling, which we've
mostly done on the north shore of Kauai. We're not terribly adventurous,
and don't tend to go far from shore or dive deep. But we love to see a wide
variety of sea life and coral.

We don't enjoy big resort areas, but prefer quieter, less populated (though
not deserted) areas.

Also, neither of us has much Spanish.

So, with all that said, can anyone recommend a good place for us to take a
winter vacation Mexico, Baja or otherwise? We live in Northern California.

Thanks!

Maxine