Exploring the Endemic Species of the Ryukyu Islands
The Ryukyu Island Arc is divided into North, Central, and South Ryukyu by the Kerama Gap and Tokara Strait. Throughout the ice ages, these islands were repeatedly connected to and separated from the mainland, resulting in a unique biodiversity. The mountainous Yambaru region in northern Okinawa, Iriomote Island, Tokunoshima, and Amami Oshima have all been collectively designated as UNESCO World Natural Heritage sites.
Wanyu
Certified Eco-Guide in Yambaru
From Taiwan
B.A. in Biology with a minor in Forestry from National Taiwan University
M.S. in Ecology and Evolutionary Biology from National Taiwan University
Exchange student at the University of the Ryukyus
Moved to Kunigami Village, Okinawa over 10 years ago, inspired by a love for wildlife
Tours offered in Chinese, English, and Japanese
Mammals
The four World Natural Heritage islands are home to around 21 species of mammals, including 13 endemic species.
Birds
About 300 bird species can be observed on the four World Heritage islands, including 6 endemic species, 3 of which are found in Yanbaru.
Reptiles
Approximately 36 species of land reptiles, including 23 endemic species, can be found across the four islands.
Amphibians
Around 21 amphibian species, including 18 endemics, inhabit the four World Natural Heritage islands.
Insects
The islands boast an incredible diversity of insects, with around 6,000 species, including 1,600 endemics.
Other Animals
There are 47 species of terrestrial crustaceans, including 15 endemics. This section also includes other invertebrates.
Plants
Roughly 2,000 species of vascular plants, including 200 endemics, grow across the four World Natural Heritage islands.
Invasive Species
Explore the invasive animals and plants on the four World Heritage islands, as designated by Japan’s Specific Invasive Species list.
Recent Observation Records
Bird watching in Yanbaru. - Wanyu is the best guide!!! She has a knowledge and understand wildlife. Friendly and polite so we really feel comfortable during the tour.
If you have time. Please come to... read more
GoPlaces274029528882025-04-14
Fun and unforgettable Okinawa ecology encounter! - In early March, we joined Wanyu’s eco-guide service to explore the unique ecology of northern Okinawa. It was a fun and unforgettable experience! We chose a package that included transportation,... read more
Candy Y2025-03-14
The one and only experienced guide in Yanbaru - Our guide, Wanyu, is incredibly knowledgeable and passionate about the flora and fauna of the national park – she truly feels at one with nature.
We asked to see... read more
Fanshimausu L2025-03-08
Explore Yambaru and the World Heritage Islands