Guishan Island is a volcanic island roughly 10 km off the coast of Toucheng, Yilan, named for its resemblance to a turtle floating on the water — it is one of Yilan's most iconic landmarks. The island covers about 2.85 km², and its highest point, Guijia Peak, reaches 398 m (401 m including the observation platform, together known as '401 Heights'). Active hydrothermal vents remain on the seafloor off the island's eastern side; geological studies show at least four eruptions in the past 7,000 years, making it a still-active volcano. Guishan Island has been open for public landings since August 2000, under a daily visitor quota that is adjusted seasonally.
Guishan Island covers about 2.85 km², with its highest point, Guijia Peak, at 398 m (401 m including the observation deck, together known as '401 Heights'). Geological research shows at least four eruptions in the past 7,000 years, and the island has two craters, Turtle Head and Turtle Shell. It has been open for public landing since August 1, 2000; from March to November the daily visitor quota is capped at roughly 1,800, split across four time slots (Wednesdays are capped lower), with most landing and whale-watching boats departing from Wushi Fishing Harbor.
Highlights of Guishan Island
Guishan Island falls within the Lanyang River Estuary Waterbird Protection Zone and the Guishan Island Marine Recreational Fishing Area management zone. The hydrothermal vents on the island's eastern seafloor can be observed from a semi-submarine or glass-bottomed boat; the water takes on a yellow-green tint from its sulfurous content, distinctly different from normal seawater. After landing, visitors can walk the circumisland trail, viewing Indigenous-related exhibits, remnants of the island's former settlement, and the lighthouse; the trail gradient varies considerably by section.
The waters around Guishan Island are one of the highest-density cetacean observation spots on Taiwan's east coast; species such as spinner dolphins and Fraser's dolphins can be spotted here. Whale-watching boats depart from Wushi Harbor; the trip takes about 3 to 4 hours, with operators typically circling the island before entering the waters where cetaceans are active. Cetacean sightings depend on natural conditions and cannot be guaranteed; voyages may be cancelled during typhoons or the prevailing northeast monsoon season.
How to make the most of your visit
Practical information
Getting there and travel time
- All boats to Guishan Island depart from Wushi Harbor pier. Purchase tickets through licensed whale-watching or island-landing operators, and confirm the day's sea conditions and any cancellations in advance.
- Landing quota regulations and daily limits may change; check the latest announcements from the Tourism Administration, MOTC, or the county government — do not rely on outdated information.
Nearby connections
- Wushi Harbor is close to Toucheng town center and Toucheng Old Street, which can be reached on foot or by a short drive after returning from a whale-watching trip.
- Waiao Beach and Zhuangwei Sand Dunes are both near Toucheng; a full-day itinerary combining Guishan Island whale-watching with coastal walks can be planned.
Sources: Tourism Administration, MOTC; Wikipedia entry on 'Guishan Island.' Photos to be replaced with Dio's own shots.
Frequently Asked Questions
How many people can land on Guishan Island each day?
Guishan Island operates under a daily total quota; from March to November the weekday cap is about 1,800 visitors across four time slots, with a lower cap on Wednesdays — applications must be submitted in advance through the Northeast and Yilan Coast National Scenic Area Administration.
Is Guishan Island an active volcano?
Yes — geological studies show at least four eruptions in the past 7,000 years, and active hydrothermal vents remain on the seafloor off the island's eastern side, making it a still-active volcanic island.
What is the best season for whale watching?
Sea conditions are relatively stable from April to October, making it the most active season for cetacean sightings; winter northeast monsoon winds often force boats to cancel.
Where do boats to Guishan Island depart from?
Most landing and whale-watching boats depart from Wushi Fishing Harbor in Toucheng, Yilan, with trips lasting roughly 2 to 4 hours depending on the itinerary.
Sources
- 龜山島 - 交通部觀光署 — 面積、登島開放年份、每日總量管制概況
- 龜山島 - 維基百科 — 火山地質特徵、噴發紀錄、海拔高度