Taiwan · Gongliao, New Taipei
Longdong Bay
Also known as: Long Dong Wan
Best time to dive
January to December; June to August; April to July; June to July
What you might see
- Blue-ringed octopusLikely
- Flamboyant cuttlefishLikely
- FrogfishLikely
- NudibranchLikely
- RhinopiasLikely
- SeahorseLikely
Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.
Certification & difficulty
Open Water
Snorkelling
Snorkel-friendly - Yes - Longdong also has a separate ticketed natural seawater swimming/snorkeling pool area (Longdong Bay Park/four-season pool)
Safety notes
Large swells/NE wave exposure (site closes, must switch to Bitou Bay); overcrowding in summer; rocky ladder entry/exit
Permits & fees
None required - public, unrestricted shore-dive area
Permits and operators change - confirm before booking.
Location
Nearest hub: Longdong
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.

