Leave Naha’s harbor for a full day among the Kerama Islands’ clear reefs. This introductory diving and snorkeling trip visits two to three protected sites where green sea turtles are commonly sighted and guides provide hands-on instruction for first-time divers.
Leave Naha’s harbor for a full day among the Kerama Islands’ clear reefs. This introductory diving and snorkeling trip visits two to three protected sites where green sea turtles are commonly sighted and guides provide hands-on instruction for first-time divers.
Morning light slices across Naha’s harbor as the boat slips clear of the city’s high-rises and into the open blue, the Kerama Islands appearing like low, green hulls on the horizon. By the time you stretch into your wetsuit on deck, salt air has replaced traffic hum; the guides brief you gently, fitting gear and walking through basic dive safety steps before the first entry.
Verified experiences and guided adventures in the surrounding area.
Operated by マリンハウスシーサー那覇店 · Naha, Okinawa Prefecture
Morning light slices across Naha’s harbor as the boat slips clear of the city’s high-rises and into the open blue, the Kerama Islands appearing like low, green hulls on the horizon. By the time you stretch into your wetsuit on deck, salt air has replaced traffic hum; the guides brief you gently, fitting gear and walking through basic dive safety steps before the first entry.
The Kerama Islands Marine Park, designated in 2014, protects coral gardens carved from volcanic rock and sand channels that funnel nutrient-rich water across shelves. The seascape shifts between shallow bommies carpeted in branching and boulder corals and deeper walls where schools of fusiliers wheel in the current. Okinawa’s Ryukyuan culture shapes island villages here—simple harbors, tiled roofs and diving traditions that predate the tourist trade.
Expect two to three water stops: a shallow snorkel site alive with juvenile reef fish, and an introductory scuba dive guided in waist-to-30m-friendly zones where green sea turtles are commonly seen. In winter, listen for distant whale song; humpback whales breed in the region.
Practicalities matter: bring swim-ready fitness, a reef-safe sunscreen, and a lightweight towel. The operator provides scuba and snorkel gear, lunch, soft drinks and pickup from designated Naha locations. Weather and sea state determine exact sites; operators may cancel for safety.
This trip balances easy accessibility with genuinely rich marine encounters—a compact, supervised way to meet the Kerama’s coral habitats and leave the city behind for a day of clear water and careful wildlife watching.
moderate.
6–8 hours.
Comfortable walking and basic swimming ability required; be able to climb a boat ladder and handle short surface swims.
No formal certification is required; the tour includes a guided introductory dive with basic training and equipment provided.
Common sightings include green sea turtles, colorful reef fish, and—seasonally in winter—distant humpback whales in breeding grounds.
Light to moderate boat motion is possible; take anti-nausea medication beforehand if prone to motion sickness and sit mid-boat where motion is least pronounced.
Guides typically take photos during the trip and provide a download link after the tour; confirm at booking for any extra fees for professional images.
The Kerama islands are part of the Ryukyu archipelago with fishing and inter-island trade traditions; the marine park status in 2014 expanded protections for its coral communities.
Operators follow Marine Park rules—no touching coral, no feeding wildlife—and recommend reef-safe sunscreen and minimizing single-use plastics to reduce impact.
マリンハウスシーサー那覇店 operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




Morning light slices across Naha’s harbor as the boat slips clear of the city’s high-rises and into the open blue, the Kerama Islands appearing like low, green hulls on the horizon. By the time you stretch into your wetsuit on deck, salt air has replaced traffic hum; the guides brief you gently, fitting gear and walking through basic dive safety steps before the first entry.
Morning light slices across Naha’s harbor as the boat slips clear of the city’s high-rises and into the open blue, the Kerama Islands appearing like low, green hulls on the horizon. By the time you stretch into your wetsuit on deck, salt air has replaced traffic hum; the guides brief you gently, fitting gear and walking through basic dive safety steps before the first entry.
The Kerama Islands Marine Park, designated in 2014, protects coral gardens carved from volcanic rock and sand channels that funnel nutrient-rich water across shelves. The seascape shifts between shallow bommies carpeted in branching and boulder corals and deeper walls where schools of fusiliers wheel in the current. Okinawa’s Ryukyuan culture shapes island villages here—simple harbors, tiled roofs and diving traditions that predate the tourist trade.
Expect two to three water stops: a shallow snorkel site alive with juvenile reef fish, and an introductory scuba dive guided in waist-to-30m-friendly zones where green sea turtles are commonly seen. In winter, listen for distant whale song; humpback whales breed in the region.
Practicalities matter: bring swim-ready fitness, a reef-safe sunscreen, and a lightweight towel. The operator provides scuba and snorkel gear, lunch, soft drinks and pickup from designated Naha locations. Weather and sea state determine exact sites; operators may cancel for safety.
This trip balances easy accessibility with genuinely rich marine encounters—a compact, supervised way to meet the Kerama’s coral habitats and leave the city behind for a day of clear water and careful wildlife watching.