www.gotokyo.org · Tourism
National park supervision, dolphin season, and access overview.
Mikurajima Island
Mikurajima Island is a guided wild-dolphin swim site with boat access.
FreedivingSnorkelingBoatIntermediate
Swim spot
Local operator required
Swimming with the dolphins and hiking are only permitted under the supervision of a Tokyo Nature Guide.
Mikurajima Island is a remote Tokyo island where guided snorkeling and free diving with wild bottlenose dolphins is the main draw.
About Mikurajima Island
Mikurajima Island is a guided wild-dolphin swim destination in Tokyo's Izu Islands, centered on snorkeling and free diving with resident bottlenose dolphins. Access is weather-sensitive and boat-based, the island has strict conservation rules, and scuba diving is not permitted. Sightings are possible but not guaranteed, and the animals cannot be touched.
Safety & Access
Site Conditions
Boat trafficRestricted accessStrong currentWaves
Safety Notes
Plan for weather holds, rough seas, and a small island with limited facilities. Keep a respectful distance from the dolphins at all times.
Access Restrictions
Dolphin swimming is only allowed under guide supervision, scuba is not permitted, and dolphins cannot be touched or chased.
Legal Notes
The island is a national park; dolphin swimming and hiking are only permitted under a Tokyo Nature Guide, and biking and camping are prohibited.
Where Is Mikurajima Island?
Featured Operators
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Local Intel For Mikurajima Island
Community notes to help plan your visit.
Scuba Diving
Scuba diving is not permitted.
Freediving
Dolphin encounters are done by snorkeling or free diving under guide supervision.
Snorkeling
Snorkeling is part of the standard dolphin-swim format, but participants need enough comfort in rough sea conditions.
Wildlife at Mikurajima Island
Species commonly reported at this site, with direct links into their wildlife guides.
Research Estimate At Mikurajima Island
Conservative baseline from public research. No community dives logged yet.
Access2/5 · Challenging entry effort
Aquatic Life5/5 · Exceptional variety
Facilities2/5 · Limited facilities
Crowd / PopularityQuite busy
CurrentStrong current
SurgeStrong surge
