The Coconut Crab – Terrestrial hermit crabs of the Ryukyu Islands

Posted on July 5, 2017 by Admin11

Coconut crabs are the largest terrestrial hermit crabs of the Ryukyu Islands. They are scarce on the Island of Okinawa due to over-hunting. They are sold in local fish markets for high prices. The meat of the coconut crab is sought after and considered a delicacy. No conservation programs are set in place to protect this native crab. It is currently listed as data deficient on the IUCN list of Threatened species.

Scientific name: Birgus latro
Common name: Coconut crab, robber crab and palm thief
Distribution: Majority of the Ryukyu Islands
Habitat: Coastal forest
Diet: Seeds, fruit and carrion
Average size: 20-40 centimeters
Color: Purple, blue or orange

Coconut crab- Okinawa © Shawn Miller

How to tell the difference between a coconut crab and a hermit crab. They look very similar to the blueberry hermit crab at first, but the coconut crab has protective spines near its eyes. Hermit crabs do not have these spines since they have adapted to retreat into a shell to protect their eyes. The coconut crab does not depend on a seashell as it gets larger. I still have yet to find a juvenile coconut crab adapting with a seashell.

spines that protect the eyes © Shawn Miller

Terrestrial hermit crabs live in the coastal forest where the treeline and coastline meet. They are the caretakers of the coastal forest. They mainly feed on plants, flowers, fruits, and seeds in the treeline. They also help disperse seeds in the forest, specifically the screw pine tree seeds.

The Climber- Adult coconut crab © Shawn Miller

Pandanus trees with spiky sword-shaped leaves provide a perfect environment for the Coconut crabs to thrive.

Pandus odifer – favorite food © Shawn Miller

A juvenile climbing on Pandanus tree searching for food.

Juvenile coconut crab © Shawn Miller

Okinawa’s harsh limestone coastline. The female must make the journey over this rough terrain to lay her eggs in the ocean.

Coconut crab – Onna village © Shawn Miller

Photographed on a white portable outdoor studio for the Meet Your neighbours project. ( Connecting people worldwide with the wildlife in their community )

Coconut crab- MYN technique © Shawn Miller

In the 1970’s and 1980’s, taxidermy was popular in the Ryukyu Islands. I still find coconut crabs displayed on walls in restaurants and hotels.

Coconut crab mounted © Shawn Miller

Meet Crabzilla! – The most aggressive crab I have encountered on Okinawa. Coconut crabs are fearless and have bone crushing power. You do not want to get caught by the claw, You play you will Pay!!

Crabzilla -Okinawa © Shawn Miller

Meet the Bone Crusher! This monster crab was over four pounds. Do not pick these crabs up if you do not know what you are doing. They can crack bones.

Coconut crabs © Shawn Miller

Coconut crabs spend their day hiding in burrows. They venture out searching for food late at night. This juvenile was found crossing the road.

Let’s dance- Coconut crab © Shawn Miller

Have a great day! Please consider making a small donation to support my mission.

Anderson’s Crocodile Newt- Endangered species

Posted on November 26, 2014 by Admin11

Anderson’s crocodile newt is an endangered species found throughout the Ryukyu islands. It is designated as a living natural monument in Okinawa and is currently listed as endangered on the IUCN red list of threatened species. This amphibian is decreasing in numbers due to poaching and deforestation. The newt is highly valued in the illegal pet trade market. This is my favorite amphibian to photograph on my night adventures in Okinawa.

- - Scientific name: Echinotriton andersoni
- - Distribution: Ryukyu Islands
- - Habitat: Forests and wetlands
- - Diet: Worms and snails
- Average Size: 120mm -160mm

The Anderson’s crocodile newt was featured in National geographic in November 2020

Shawn Miller featured 11-2021

Photographed under the ambient light on Amami Island.

Anderson’s crocodile newt

The first Anderson’s newt I have seen with one webbed hind foot.

Webbed hind feet

I was lucky to capture the Anderson’s crocodile newt cleaning its eyes. This was the first time documenting this behavior.

Anderson’s crocodile newt

Newt with closed eye

Sometime they pick up hitchhikers, check out this blood sucking leech!

Blood sucking leech

It’s rare to find animals eating in nature. I found this Anderson’s crocodile newt feeding on an earthworm in Northern Okinawa.

Feeding, Yanbaru forest

Late in the evening the newts meet up and search for a mate.

Finding a mate, Onna Village

The aquatic stage of the newt has external gills. It slowly prepares itself for the transition into the terrestrial juvenile stage. They can be found in mud puddles in the months of May and June.

Aquatic stage -external gills

Watch your speed and pay close attention to crossing wildlife. Roadkill is a huge problem on Okinawa.

Dinosaurs of Okinawa

Watch out for crossing newts

All the roads in northern Okinawa have specialized wildlife steps for the animals that get trapped in the drainage ditch. These steps allow the newts and other animals to crawl out safely.

Wildlife steps

My Mission: To Document and Preserve the Wildlife of the Ryukyu Islands

This site is also designed to help people identify the beautiful animals of Okinawa, basically to serve as an online nature reference guide. If you would like to make a contribution to support my mission, please click on the donation link paypal.me/maketheswitch4nature

Your donations will help worldwide conservation initiatives as well as bring solutions to the worldwide pollution issues on our beautiful shorelines. Thank you for your support. Shawn M Miller.

Kuroiwa’s Ground Gecko, Endangered species of the Ryukyu Islands!

Posted on November 18, 2014 by Admin11

Kuroiwa’s Ground Gecko is a beautiful lizard found throughout the Ryukyu Islands. It is currently listed endangered on the IUCN red list of threatened species. This lizard is decreasing in numbers due to poaching, deforestation, and the threat of feral cats. The lizard is high valued in the illegal pet trade market and needs to protected. This is one of my favorite reptiles to photograph on my night adventures in Okinawa.

- Scientific name: Goniurosaurus kuroiwae

- Distribution: Okinawa Islands

- Habitat: Leaf littered forests

- Diet: Worms and insects

Average Size: 110mm -130mm

Shawn Miller Featured- Wildlife As Canon Sees. National Geographic October 2017

Kuroiwa’s Ground Gecko © Shawn Miller

This is the first ground gecko I photographed in 2010. I found it under a piece of carpet in Onna Village. Illegal dumping is a huge problem in Okinawa.

In the daytime, they live in caves, crevices, and holes in the ground

They come out to feed at night.

When they feel threatened they will stand up on all fours and try to intimate you with a stare down.

They have some strange looking feet –

When I approached this ground gecko it stayed in place. I found three Mosquitoes sucking the blood right out of it. the first time I observed mosquitoes on a lizard.

The juveniles have vibrant orange stripes down the back and rings around their tails.

Juvenile ground gecko

This beautiful Goniurosaurus kuroiwae orientalis was photographed on Ie Island.

Goniurosaurus kuroiwae orientalis

A wide-angle macro perspective of a ground gecko in central Okinawa.

The Banded ground gecko (Goniurosaurus splendens) is endemic to the Island of Tokunoshima. It is designated as a living natural monument in Kagoshima prefecture.

Toyama’s ground gecko (Goniurosaurus toyami) is endemic to Iheya Island. It is currently listed as critically endangered.

Pay attention to crossing wildlife!

My Mission: To Document and Preserve the Wildlife of the Ryukyu Islands

Your donations will help conservation initiatives as well as bring solutions to the worldwide pollution issues on our beautiful shorelines. Thank you for your support, Shawn M Miller.

#MakeTheSwitch4Nature

Okinawa Nature Photography

沖縄自然写真 By Shawn Miller

Tag Archives: night dwellers

The Coconut Crab – Terrestrial hermit crabs of the Ryukyu Islands

Anderson’s Crocodile Newt- Endangered species

Kuroiwa’s Ground Gecko, Endangered species of the Ryukyu Islands!