Kerama Islands
Japan · Ryukyu Islands
The Kerama Islands sit 30 kilometres west of Naha, Okinawa, sheltered within a national park renowned for coral density rivalling the Great Barrier Reef. Humpback whales calve in these waters January through March, while manta rays and sea turtles are resident year-round.
How this reef is doing
ⓘ How we measure thisReef state
Live science signals for this reef are still being gathered.
Coral cover
Fish life
Heat
Fishing
Open to fishing, and the water is busy.
Sources · Global Fishing Watch and reef gravity
What you will see
17 species across the dive sites here
Clark'S Anemonefish
Seen 2 months ago
at Tokashiki Outer Reef
Least concern
Tomato Clownfish
Seen 2 months ago
at Tokashiki Outer Reef
Least concern
Moorish Idol
Seen 2 months ago
at Aka Island Coral Garden
Least concern
Green Sea Turtle
Seen 2 months ago
at Zamami Whale Watching Dive
Least concern
Blueberry Hermit Crab
Seen 2 months ago
at Zamami Whale Watching Dive
Ijima'S Turtle-Headed Sea Snake
Seen 3 months ago
at Zamami Whale Watching Dive
Least concern
Redfin Butterflyfish
Seen 3 months ago
at Geruma Turtle Cleaning Station
Least concern
White-tip Reef Shark
Seen 3 months ago
at Zamami Whale Watching Dive
Vulnerable
Hawksbill Sea Turtle
Seen 3 months ago
at Geruma Turtle Cleaning Station
Critically endangered
Humpback Whale
Seen 5 months ago
at Zamami Whale Watching Dive
Least concern
Palette Surgeonfish
Seen May 2025
at Geruma Turtle Cleaning Station
Least concern
Bumphead Parrotfish
Seen year round
at Aka Island Coral Garden
Vulnerable
Giant Trevally
Seen year round
at Tokashiki Outer Reef
Least concern
Grey Reef Shark
Seen year round
at Tokashiki Outer Reef
Endangered
Spotted Eagle Ray
Seen year round
at Zamami Whale Watching Dive
Endangered
Manta Ray
Seasonal visitor
at Aka Island Coral Garden
Vulnerable
Scalloped Hammerhead Shark
Seasonal visitor
at Tokashiki Outer Reef
Critically endangered
Dive sites
Zamami Whale Watching Dive
humpback whale · spotted eagle ray · white-tip reef shark · green sea turtle
Aka Island Coral Garden
green sea turtle · bumphead parrotfish · manta ray · blueberry hermit crab
Geruma Turtle Cleaning Station
green sea turtle · hawksbill sea turtle · palette surgeonfish · blueberry hermit crab
Tokashiki Outer Reef
grey reef shark · scalloped hammerhead shark · giant trevally · green sea turtle