New Taipei City dive sites

Longdong is located within the Northeast Coast National Scenic Area, approximately one hour from central Taipei by car. Public transport options include taking the Taiwan Railways Administration train to Ruifang station, then transferring to a local bus along the coastal road. Several Taipei-based dive shops run regular day trips to Longdong with transportation included, departing early morning and returning by evening. The site has parking areas, changing facilities, and the Longdong Bay Ocean Park provides additional infrastructure including rinse stations and equipment storage.

While diving at Longdong is possible year-round, winter conditions from November through March are challenging. Water temperatures drop to 18 degrees Celsius or lower, the northeast monsoon brings significant wave action and reduced visibility, and marine life activity decreases. The prime season runs from May through October, with July to September offering the warmest water and best visibility. During summer, tropical fish species carried north by the Kuroshio Current make temporary appearances, adding unexpected colour to the temperate reef community.

Longdong is widely used as a training site for Open Water certification courses, making it suitable for complete beginners under instructor supervision. The sheltered bay areas offer shallow, calm conditions ideal for skill practice, while the outer reef edges provide more interesting terrain for certified divers. Many of Taiwan's PADI and SSI instructors conduct their open water training dives at Longdong due to the combination of easy shore access, gradual depth progression, and sufficient marine life to keep students engaged. Certified divers will find the outer walls and boulder fields more rewarding.