Motoura is a snorkeling cove in the Isso district on Yakushima's north coast, Kagoshima Prefecture β tucked in just across the parking lot from Isso Beach, the island's marine-leisure hub. Its rocky shallows shelter colorful reef fish, dense schools of silvery kibinago, and green sea turtles that snorkelers regularly encounter, which is why local dive shops favor it as a beginner training ground. The bay stays shallow at roughly 1β4 m, though the rocky bottom can drop off suddenly in places; July water temperatures run 24β27Β°C with visibility of 10β15 m on a good day. As of July 2026 it's peak season, with Isso Beach's official swimming period (mid-July to late August, lifeguards on duty 9amβ5pm) in effect and several shops running lessons and guided snorkel tours.
A sheltered cove right behind Isso Beach, just across the parking lot
Colorful reef fish hiding among the rocks and dense schools of kibinago
A spot known for a good chance of encountering green sea turtles
Multiple local dive shops offer beginner lessons and gear rental here
A mix of subtropical and temperate fish species unique to Yakushima's waters
Good to know
SafetyThe rocky seabed means the depth can drop off suddenly just a few steps from shore β wear a life jacket or use a float, and never snorkel alone.
SafetyOn windy or swelly days the current gets noticeably stronger; if you're not confident, book a guided tour instead of going in solo.
SafetyThe bottom is rocky, so bare hands and feet cut easily β marine shoes and gloves are strongly recommended.
SafetyOutside the official swimming season (mid-July to late August) or lifeguard hours (9amβ5pm), there's no one on watch, so take extra care.
RulesDon't touch or stand on coral or reef life, and use reef-safe sunscreen. Camping and barbecues are not allowed on the beach.
MannersKeep a respectful distance from sea turtles and other wildlife β no touching or feeding.
SeasonVisibility can drop sharply right after heavy rain, so check recent weather before heading out.
Practical info
It's about a 15-minute drive from Miyanoura port/airport (or take a bus to the Yahazu stop); park at Isso Beach and walk over. Restrooms and showers are only available during official swimming-season lifeguard hours, and most visitors rent gear or book a lesson through one of the local dive shops. Hours, fees, and booking requirements change, so verify current details before your trip.
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