There are not many possibilities to dive in Phuket directly from the beach. Beach dives are possible from the Paradise Beach south of Patong and at the AO-Sane Beach, which is located at the southernmost tip of Phuket.
All other dive spots can only be reached by car.... and also not so worth seeing.
I fell in love with the AO-Sane Beach because there is an amazing variety of fish and other sea creatures.
There are species that normally lead you to the Similan Islands, others that you can find mainly on Racha Noi.
Also the diversity of the coral species is impressive at this reef, which stretches over the whole bay.
Here is a small impression.