Snorkeling in South Korea
Including Beomseom Island, Hyeopjae Beach, and Munseom Island. On the map.
The vibe
Peering beneath the surface here is more of a casual shoreline pastime than a tropical reef holiday, usually practiced in shallow rock pools or clear volcanic bays. Summer is the only practical window when the water warms up enough for a simple mask and wetsuit. It feels entirely DIY and local, with families splashing around tidal flats rather than organized tourist boat trips.
Beomseom Island, Seogwipo
Jeju
dokaspar / Wikimedia Commons (CC BY-SA 3.0)
Beomseom is a striking, cliff-sided island that offers deep-water snorkeling around its perimeter. The site is known for its large rock formations and the potential to see larger marine life, including schools of migratory fish that pass through the channel.
Access. Requires a boat charter from Seogwipo; usually visited as part of a guided excursion.
Notes. Recommended for experienced swimmers due to the open-water nature and potential for shifting currents.
Hyeopjae Beach, Jeju
Jeju
Engin Cukuroglu / Wikimedia Commons (CC BY-SA 3.0)
Hyeopjae Beach features shallow, turquoise waters over a white sandy bottom, making it perfect for casual snorkeling. The water is exceptionally clear, and the proximity to Biyangdo Island creates a sheltered environment where small fish can be easily spotted near the rockier edges of the beach.
Access. Easy shore entry directly from the beach; gear can be rented from local kiosks during the summer season.
Notes. Best during low tide when the water is calmest and the sandbar is exposed.
Munseom Island, Seogwipo
Jeju
Alex Brown from Cambridge, United Kingdom / Wikimedia Commons (CC BY 2.0)
Located just off the coast of Seogwipo, Munseom offers some of the clearest water in South Korea with a dramatic underwater landscape of volcanic rock formations. Snorkelers can observe a unique mix of temperate and subtropical fish species, including soft corals that thrive in the island's strong currents.
Access. Accessible via a short 10-minute boat ride from Seogwipo Port; local dive shops frequently organize snorkel trips to this protected area.
Notes. Strong currents are common; snorkeling is best done with a guided boat tour during slack tide.
Seopseom Island, Seogwipo
Jeju
Alex Brown from Cambridge, United Kingdom / Wikimedia Commons (CC BY 2.0)
Seopseom is famous for its dense forests of soft corals and vibrant marine life, making it a top-tier site for underwater observation. The rocky shoreline drops into deep, clear water, providing a habitat for diverse species rarely seen elsewhere in the country.
Access. Boat access from Seogwipo; many operators combine trips to Seopseom with nearby Munseom.
Notes. Marine protected area; strictly no fishing or collecting of any marine life.