| Sightseeing type | Natural sights |
Life jackets must be worn throughout the activity. It is strictly forbidden to take them off or unfasten the buckles to maintain navigation safety.
Flash photography is prohibited during the event; personal belongings must be kept safe by yourself and you will be responsible for any loss
If there are force majeure factors that affect the event, a full refund will be made
Please be sure to check in 20 minutes early and listen to the pre-departure instructions
Special Tip: Because the Blue Tears viewing experience requires total darkness (those with claustrophobia beware), we recommend visiting the Beihai Recreation Area during the day. The Nangan Visitor Center, Dahan Base, and Beihai Tunnel are all open to the public during the day. During the day, you can truly appreciate the magnificent craftsmanship of the Beihai Tunnel. At night, with no light, you won't be able to see the surroundings. Therefore, it's recommended that you confirm your reservation at the counter during your daytime visit to avoid getting lost in the dark.
The Matsu Blue Tears is a stunning natural phenomenon where the ocean water glows vivid blue at night. This bioluminescence is caused by millions of tiny dinoflagellates, often referred to as sea sparkle, that emit light when disturbed by waves or movement. It creates a magical, starry effect on the water's surface, making it a must-see spectacle.
The Matsu Blue Tears phenomenon is primarily caused by a type of bioluminescent dinoflagellate known as Noctiluca scintillans, or sea sparkle. These microscopic marine organisms, when agitated by currents, waves, or even a passing boat, produce a captivating blue light, transforming the night sea into a glowing spectacle around the Matsu Islands.
The Matsu Blue Tears are a seasonal special, best viewed between March and September each year. The peak season for the most vibrant displays typically falls from April to June. To maximize your chances, look for clear nights with minimal moonlight and calm seas, as these conditions are ideal for observing the glowing phenomenon.
The Beihai Tunnel rowboat offers an unparalleled and intimate way to experience the Matsu Blue Tears. As you row through the dark, cavernous tunnel, your movement disturbs the dinoflagellates in the water, causing them to glow vividly. This creates an immersive and ethereal effect, allowing you to see the 'blue elves dancing on the water' up close in a truly dreamlike secret place, amplifying the magic of the phenomenon.
The Matsu Blue Tears are considered a 'dreamlike secret experience' due to their ethereal beauty, rarity, and the enchanting way they transform the night sea. The glow is unpredictable and often requires specific environmental conditions to appear, making each sighting a precious, almost magical moment. Viewing it, especially from unique spots like the Beihai Tunnel, feels like discovering a hidden, otherworldly wonder that few get to witness.
Several environmental factors influence the visibility of Matsu Blue Tears. Key factors include the water temperature, nutrient levels in the water, and tidal conditions. The phenomenon is most vibrant on dark, moonless nights with calm waters, as light pollution can diminish the glow. Optimal conditions usually involve warmer waters and sufficient nutrients to support the bloom of bioluminescent algae.
In Matsu Nangan, beyond the unique Beihai Tunnel experience, visitors can often observe the Blue Tears from various coastal spots known for minimal light pollution. Popular locations include the areas around Iron Fort, Ren'ai Village (Tieban), and Fushan Illuminated Wall. Searching for dark, secluded bays and rocky shores can also yield excellent viewing opportunities, especially on nights with strong tidal movements.
For visitors planning to see the Matsu Blue Tears, it's essential to check the local weather and tide forecasts, as dark, moonless nights with calm waters are ideal. Bring a flashlight for walking in low light, but turn it off when viewing to allow your eyes to adjust. Wear dark clothing and comfortable shoes, and be mindful of your surroundings near the water's edge to ensure safety while enjoying this magical sight.