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- Boat-based whale and dolphin watching: The waters around Guishan Island are one of Taiwan’s best places to see cetaceans close to shore, so trips here feel more “wow” and less “where’d it go?” than many open-ocean tours. Early-morning outings often give the best light and calmer seas — expect fast-moving pods, playful behavior, and good photo moments from small boats (no guarantees, but sightings are frequent enough to be the island’s headline draw).
- Snorkeling the volcanic reef: The island’s underwater landscape is volcanic — lava beds, drop-offs and odd rock formations — which creates pockets of reef life you won’t find on a flat sandy beach. Guides often take small groups to sheltered coves where visibility is decent and sea turtles and colorful reef fish are commonly seen; currents
- Boat-based whale and dolphin watching: The waters around Guishan Island are one of Taiwan’s best places to see cetaceans close to shore, so trips here feel more “wow” and less “where’d it go?” than many open-ocean tours. Early-morning outings often give the best light and calmer seas — expect fast-moving pods, playful behavior, and good photo moments from small boats (no guarantees, but sightings are frequent enough to be the island’s headline draw).
- Snorkeling the volcanic reef: The island’s underwater landscape is volcanic — lava beds, drop-offs and odd rock formations — which creates pockets of reef life you won’t find on a flat sandy beach. Guides often take small groups to sheltered coves where visibility is decent and sea turtles and colorful reef fish are commonly seen; currents can be strong, so guided, gear-equipped snorkeling is the realistic way to enjoy it.
- Hike to the peak and lighthouse ridge: The short island trail climbs over volcanic steps to a photogenic ridge and old lighthouse area with panoramic views of the “turtle” silhouette and Yilan coastline. It’s not a multi-day trek — more of a steep, rewarding half-hour scramble — and the mix of barren volcanic rock, grass patches and old military bunkers makes the landscape feel uniquely lunar and very Instagram-able (but follow the marked paths — access and permits are controlled).
- Explore the volcanic geology and tidepools: Guishan’s steaming vents, basalt shelves, and irregular cliffs give you geology lessons without the museum — you can smell sulfur in spots, poke at basalt columns, and check tidepools full of weird little life. Those features are what set this shoreline apart from a generic sand strip; they’re fragile, so look and don’t trample, and visit with a guide who knows safe spots.
- Sunset silhouette and night-sky viewing (from boat or mainland): The island’s turtle-shaped profile makes for one of the most dramatic coastal sunsets in northeastern Taiwan — boats and nearby headlands frame a perfect silhouette. Note: the island itself is generally closed after dark and overnight landings are restricted, so night experiences are about sitting on a boat or the Yilan coast watching the light fade and the stars come out rather than roaming the island at night.
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Hi, I’m Johan (Netherlands 🇳🇱), the creator of TakeYourBackpack. Over the past decade, I’ve backpacked through 80+ countries across six continents, gaining extensive experience with independent travel, long-term trips, and overland routes.