Pinetrees is often explored from a boat, but with the right directions, it looks like an easy kick out from shore. The lava tubes here make great exploring, but dive within your experience and training, and if not so trained, never go past where you can see daylight (if you want to live to tell about it). Lots of divers have lost their dives in shallow lava tubes due to panic and silt-outs. There is also an interesting shallow bay here to explore.