www.gotokyo.org · Tourism
National park supervision, dolphin season, and access overview.
Dive Spot Guide•
Mikurajima Island
Mikurajima Island is a guided wild-dolphin swim site with boat access.
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.
•
Research Estimate At Mikurajima Island
Conservative baseline from public research. No community dives logged yet.
AccessChallenging entry effort
Aquatic LifeExceptional variety
FacilitiesLimited facilities
Crowd / PopularityQuite busy
CurrentStrong current
SurgeStrong surge
Where Is Mikurajima Island?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Mikurajima Island Planning Details
Depth range, seasonality, and planning context.
Depth Note
Not applicable; the dolphin swims are boat-based and are not tied to a fixed depth range.
Best Season
April to November.
Typical Conditions
Expect rough seas, weather-dependent access, and guided boat sessions in open water. Sightings are common but not guaranteed.
Safety & Access At Mikurajima Island
Hazards, restrictions, and access requirements.
Key Hazards
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.
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.
Recent Logged Visits At Mikurajima Island
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Mikurajima Island
Average conditions based on logged dives & visits.
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
