Hot Springs by the Sea? Yes, on Green Island!
When people think of hot springs, they usually imagine soaking in a quiet forest, surrounded by trees and nature. But did you know that hot springs can also be found by the ocean? On Green Island in Taiwan, you’ll find one of the world’s rare underwater hot springs—right on the coast! Imagine relaxing in warm, mineral-rich waters while gazing out at the open sea. It’s a totally different vibe from the usual mountain hot spring resorts, and just as amazing in its own way.
Diving + Hot Springs = The Ultimate Island Combo
Green Island is located off the coast of Taitung County, and it’s not just famous for its hot springs—it’s also one of Taiwan’s top spots for diving and snorkeling. The best way to enjoy your trip? Go diving or snorkeling during the day, then soak in a steamy oceanfront hot spring in the evening. If you’re looking for a unique island getaway that combines underwater adventures with natural relaxation, Green Island is the place to be.
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What Is Green Island?
Green Island (绿岛), also known as “Fire Island,” is a small volcanic island off Taiwan’s southeastern coast. It’s the fourth-largest offshore island in Taiwan and is known for its stunning blue waters, dramatic sea-eroded landscapes, rich marine life, and laid-back island vibe. It’s a paradise for divers, snorkelers, and outdoor lovers.
With its crystal-clear waters and vibrant marine ecosystem, Green Island is a dream come true for underwater explorers. Especially in September, the marine life is incredibly active—you might see colorful coral reefs, schools of tropical fish, sea turtles, and even rare creatures like blue dragon nudibranchs or leopard sharks if you’re lucky.
But it’s not just the sea life that makes Green Island special. Soaking in a natural hot spring by the ocean after a long dive? That’s a one-of-a-kind experience you won’t want to miss. The island’s unique geothermal features make it one of the few places in the world where you can enjoy underwater hot springs right next to the sea.
But Green Island isn’t a year-round destination, keep in mind that from October to April, Green Island is heavily affected by the northeast monsoon. Waves can reach over 3 meters, and ferry services are often canceled. During this time, the island can become nearly inaccessible, so always check ferry schedules before you plan a trip.
Here’s a seasonal breakdown to help you plan:
Spring & Fall (March to May, October to November)
Comfortable weather and mild temperatures make it ideal for diving, snorkeling, scooter rides, and hiking. With fewer tourists and less crowded attractions, it’s the best season to visit.
Summer (June to September)
Sunny and great for water activities and diving, but don’t forget sun protection. Be aware of typhoon season in August and September, as it may cause ferry cancellations.
Winter (December to February)
Ocean temperatures are cooler, but it’s a great time to enjoy hot springs and scenic views. Due to the northeast monsoon, ferry services may be disrupted—always check the schedule in advance.
How to Get to Green Island
There are two main ways to get to Green Island from Taitung: by ferry or by plane—and most travelers prefer the ferry for its convenience and affordability.
But first, how do you get to Taitung? If you’re not already there, here are your options:
- By train: From Taipei or Kaohsiung, you can take the Puyuma Express, Tze-Chiang Limited Express, or Juguang train to Taitung.
- From Taipei: 3.5–5 hours, about NT$900–1,200 one-way
- From Kaohsiung: 1.5–2 hours
- By plane: You can also fly from Taipei Songshan Airport to Taitung Airport. The flight takes about 50 minutes, and prices vary depending on the airline and time of booking.
⛴️ By Ferry
Ferries to Green Island depart from Fugang Harbor in Taitung. You can get to the harbor from downtown Taitung by taxi or shuttle (around 15 minutes). Several ferry companies operate routes to Green Island, but do keep in mind: service may be canceled or delayed on stormy or high-wind days (especially during typhoon season). Always check the schedule on the official website in advance.
Also, the ferry ride can be a bit bumpy, so if you’re prone to seasickness, it’s a good idea to take motion sickness medicine beforehand.
- Travel time: ~50 minutes
- Ticket price: Around NT$400–500 one-way (varies slightly by company)
- Frequency: Multiple trips daily (first around 7:30 AM, last around 4:30 PM)
✈️ By Plane
Flights to Green Island depart from Taitung Airport and are operated by Uni Air. The flight is super short—just about 15 minutes—but weather conditions (especially during typhoon season) can cause delays or cancellations. Seats are limited, so book early!
- Ticket price: Around NT$1,000–2,000 one-way (depending on season and availability)
- Frequency: Several flights per day, starting from around 7:30 AM
🛵 Getting Around Green Island
Once you arrive, scooters are the main way to get around. It’s best to reserve one ahead of time—rental fees usually range from NT$300–500/day. When booking your accommodation or dive shop, check if they offer pickup services to save yourself the hassle of arranging transport upon arrival.
Green Island’s Famous Underwater Hot Spring – Zhaori Hot Spring
Located on the southeastern coast of Green Island near Cape Sail Rock, Zhaori Hot Spring is Taiwan’s only saltwater hot spring—and one of only three underwater hot springs in the world! (The other two are in Yakushima, Japan and Sicily, Italy.)
So how does it work? Seawater or groundwater seeps deep underground, gets heated by volcanic lava, and then rises back up through the seabed. The spring water is clear, odorless, and rich in rare minerals. With a temperature of 60–70°C, it’s perfect for relaxing your body, boosting circulation, and soothing tired muscles—and it’s gentle on the skin too.
The best part? Watching the sunrise while soaking in the hot spring. As the sun rises over the Pacific Ocean, you can enjoy the view while soaking in the warm water—pure bliss.
The hot spring area features five open-air terraced pools, indoor soaking pools, a relaxing spa area, and even cooking pools—yes, you can boil eggs, corn, or shrimp right in the hot spring water! Among these, the three pools in the intertidal zone are the most popular. You can even switch between hot and cold pools for a sauna-like experience.
You’ll need to wear a swimsuit and swim cap to enter. The area also features scenic walkways, oceanview pavilions, and snack stalls for a full experience.
- Address: No. 167, Wenquan Rd., Gongguan Village, Green Island, Taitung, Taiwan
- Opening hours:
- Morning: 4:30 AM – 11:00 AM
- Evening: 4:30 PM – 11:00 PM
- Closed for cleaning between 11:00 AM – 4:30 PM daily
- (Hours may change, check official website for updates)
- Admission:
- Full ticket: NT$250
- Discounted ticket: NT$125 (for kids 6–12, seniors 65+, and persons with disabilities)
- Free: Green Island residents and children under 6 (ID required)
- Phone: 089-671133
- Website: East Coast National Scenic Area – Zhaori Hot Spring
Top 3 Snorkeling & Diving Spots in Green Island
Green Island is a paradise for water lovers, offering all kinds of ocean adventures like snorkeling, scuba diving, and freediving. Whether you’re certified or a total beginner, there are plenty of options available.
If you’re going snorkeling, it’s a good idea to wear a swimsuit or rash guard. Lightweight T-shirts and shorts work too. Most local shops will gear you up with a life vest, mask, and snorkel. And don’t forget to bring a change of clothes! Can’t swim? No worries—you can still try scuba or freediving as long as you have a buddy with you and follow a certified instructor.
Want to get certified? Many diving centers on the island offer AIDA level 1 to 3 freediving courses. These include both classroom theory and in-water practice, and prices typically range from NT$6,000 to NT$15,000.
1. Chaikou
Located on the island’s northernmost point, Chaikou is famous for its rich stony coral landscape. The water depth and color here are strikingly layered, making it ideal for both snorkeling and scuba diving. From June to August, southwest winds make this spot especially perfect for snorkeling.
2. Shilang
On the west coast of Green Island, Shilang offers crystal-clear water and amazing visibility. The coral reefs here are gorgeous, and dive depths can reach up to 11.5 meters.
3. Dabaisha
Down in the southwest corner, Dabaisha Beach is made up of crushed shells and fossilized coral. The coastline stretches for hundreds of meters and includes an easy-access diving walkway. During low tide, it’s a great place to observe the changing tides and coastal marine life.
Hidden Gem: The Magical Blue Cave
The Blue Cave is one of Green Island’s most iconic snorkel spots—a real bucket list destination! Tucked inside a sea cave on the island’s northeast coast, it’s only accessible when the tides and weather are just right. When sunlight filters through the cave, the water glows an otherworldly shade of blue, like swimming in a sapphire.
The best way to explore the Blue Cave is with a professional guided snorkeling tour. The instructor will lead you safely around the rocky coast and into the cave at low tide. You’ll get to take in the surreal underwater reflections, and maybe even spot some vibrant tropical fish and coral just outside the cave.
Important: The cave’s terrain is tricky, so don’t try to go alone. Booking with an experienced dive shop ensures both safety and an unforgettable adventure.
Recommended Dive Shops
Fire Island Dive Resort
Fire Island is a 5-star PADI Instructor Development Center and Freediving Center. Whether you’re looking to get certified, go on a fun dive, or just buy top-quality dive gear, they’ve got you covered.
If you want to start diving from scratch and work your way up to an Open Water or Advanced Open Water certification, Fire Island is a solid choice. They offer everything from beginner courses to instructor-level training.
Not into diving? Fire Island also offers laid-back water activities like stand-up paddleboarding (SUP), kayaking, and water bikes.
Official Website | Facebook
Bay Dive Green Island
Bay Dive is a PADI-certified resort that’s great for both serious divers and folks just looking to have a chill experience in the water. If you’re looking for a more laid-back experience compared to Fire Island, Bay Dive is a great choice. Even complete beginners with no diving license can join their discovery diving programs!
You’ll learn the theory, get hands-on skills, and can work toward your Open Water or Advanced Open Water certification.
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Venus Dive Center
Already certified? Venus Dive Center offers guided fun dives for those with OW or AOW licenses. They also offer SUP experiences if you’re looking to mix things up.
One awesome thing: they have all-in-one packages that include accommodation, scooter rental, and ferry tickets. Just message them on Facebook to arrange it (it’s separate from the diving package).
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Hifive Ocean Club
Most of the options above are for scuba diving, but if you’re into freediving, Hifive Ocean is where you wanna go. They offer intro freediving courses even if you’ve never done it before—and advanced sessions for experienced freedivers too.
Bonus Tip: Easy All-in-One Packages
Want to keep things simple? Check out these full dive tour packages that include accommodation, transport, and diving.
Before heading to Green Island, double-check the ferry schedule from Fugang Harbor in Taitung, especially during bad weather or typhoon season—ferries sometimes get canceled due to rough seas.
Also, keep in mind that accommodations and activities (like diving and hot springs) tend to book up fast during summer and holiday periods, so it’s best to make reservations early. For safety, always dive or snorkel with certified guides and proper gear, and steer clear of the ocean during typhoon season. Oh, and please respect the marine environment—no stepping on or damaging the coral!
Check this out for more information!
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