I've stayed on the island of Maui twice. Beautiful waters and the most colorful fish in the coral reefs. You can even feed the fish-they eat out of your hand and make a frenzied but gentle mad dash at you!
The Pacific around San Francisco is freezing cold (greatest concentration of great white sharks in the world too) so it's quite logical to take the 6 hour flight to Hawaii for warmer waters, which is only 3 hours more than flying to the tip of California.
The surfers here (and they are legendary) are just nuts, but amazing to watch
Joy's felted seascape reminded me of the intense oranges and reds
found in the coral in Hawaii, and the ocean is almost that color blue.