Subic is a great option from Manila. There is a variety of diving, but the main emphasis is on the large number of terrific wrecks.
Here’s a video of me and my buddy penetrating the wreck. Awesome!
Top-side, there is a wide range of activities; such as the Ocean Adventure theme park (dolphin shows etc), Tree-Top Jungle Adventure, Jungle Treks and a wide range of bars, restaurants and beaches. The area is nowhere near as commercialised and ‘touristy’ as other Philippines destinations like PG or Boracay. There is an hourly bus service from Manila to Subic/Olongapo, costing less than 250php each way. The journey takes approx 2.5 – 3.5 hours.
As of late, Subic Bay has one of the highest concentrations of war wrecks within sport-diving range in the world. According to the Subic Bay Historical Museum, 19 wrecks dating from the Spanish-American War to the Second World War have been identified in Subic Bay. Ironically, these wrecks have only recently been opened to recreational divers, due to the existence of a major US Navy base at Subic Bay until 1991.