Taiwan · north Green Island
One Line Sky
Also known as: Yixiantian
Best time to dive
April to October
Certification & difficulty
Advanced Open Water - advanced conditions (currents/depth); dive within your training.
Snorkelling
Not a snorkel site - no
Safety notes
strong current, narrow overhead/near-overhead swim-through (entanglement and buoyancy risk), boat traffic at entry point
Permits & fees
no specific government diving permit fee found; general East Coast National Scenic Area conservation rules apply (no touching/collecting marine life or coral); fee amount -
Permits and operators change - confirm before booking.
Location
Nearest hub: Green Island
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.