Trading plastic for shells by Shawn Miller

How many times have you picked up an empty seashell and brought it home? Most people don’t realize that they are taking a potential mobile home. As hermit crabs grow larger they have to upgrade their mobile home. They are constantly searching for larger seashells. No shells, then the hermits will adapt with plastic twist tops, plugs, and even broken bottles. Over collecting seashells is a contributing factor.

Take trash not crab homes

” Trading Plastic for Shells ” Every hermit crab found adapting with trash receives a proper seashell home. They get a better home and I keep the plastic. So far I have a nice collection of plastic.

Shawn Miller - plastic collection
Trading plastic for shells collection


In 2020, Tony Choi ( hermit crab specialist ) recommended that I place empty seashells on the shorelines. He explained that Taiwan has the same issue with over-collecting. Tony sent me the first shell donation and after that more people starting making kind contributions. I engraved numbers on all the shells. Hopefully, this will prevent beachcombers and fishermen from taking the shells.

Carving with the Dremel tool by Shawn Miller
Trading plastic for shells

Below is a large land hermit crab ( Coenobita cavipes ) I found using a plastic PVC 90-degree elbow as a protective home. Yomitan Village, Okinawa.

How do I get the crabs to swap? I bring a bucket with an assortment of native shells with me on my beach hikes. The hermit crabs are placed in the bucket and make the switch on their own. They get a better home and I keep the plastic. #Maketheswitch4nature

The land hermit crab made the switch into a donated tapestry shell (Miller #23). Hermit crabs do not prefer plastic, they are just adapting to what is available.

If you would like to see video footage of the hermit crabs making the switch from plastic to seashell check out MakeTheSwitch4Nature

” Trading plastic for shells ” Before and after examples


This post is not to make people sad, guilty, or lose hope, It is to bring awareness to the ongoing trash problem in our oceans and on our shorelines. Hopefully, these images will inspire people to change.

My Mission: To Protect and Preserve the Wildlife of the Ryukyu Islands for Future Generations

If you would like to help me make a difference Please check out my Patreon Site https://www.patreon.com/MakeTheSwitch4Nature

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


Mangrove Forests of Okinawa

Mangrove forests are one of the most threatened ecosystems on the planet. The beautiful forests support a huge diversity of species that humans depend on for survival.

Benefits of Mangrove forests 

  • Provide nursery areas for small fish
  • Provide coastal protection from storms
  • Clean toxins out of the fresh water
  • Reduce carbon dioxide
Mangroves of Senaga Island

Coastal development, rising sea levels, and pollution are the mangrove’s biggest threat. The roots act as nets catching plastic bags, fishing ropes and other marine debris.

Mangrove pollution

Over time the toxic plastic smothers the trees.

Mangrove pollution
Mangrove Pollution

Mangrove roots protect small fish, crustaceans, and sea birds from predators.

Mangrove roots

My two favorite crustaceans of the mangrove mud plats are the Okinawa mud lobster (Thalassina anomala) and the Ryukyu soldier crab (Mictyris guinotae).

(Thalassina anomala)
Mictyris guinotae

Mangroves trees can survive in freshwater and saltwater. They are a valuable ecosystem and must be protected.

Mangrove reflection
Mangrove sunrise

Our waste is having a massive impact on the coastal forests of the Ryukyu Islands. This post is not to make people feel guilty or lose hope. It is to inspire people to change. Make The Switch 4 Nature!

Iriomote coastal mangrove forest

My Mission: To Protect and Preserve the Wildlife of the Ryukyu Islands for Future Generations. – If you would like to join my journey, check out my Patreon https://www.patreon.com/MakeTheSwitch4Nature

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

Light-painting with the nightsea by Shawn Miller

Light painting is the artistic technique of moving a hand held-light source while taking a long exposure. The purpose is to illuminate the subject with constant lighting to create a powerful image.  It takes a steady hand, patience, trial and error and imagination. Using a specialized blue light (nightsea) will allow you to capture fluorescence. The images will be enhanced with beautiful bright vibrant colors.

Most plants and animals fluoresce under blue light. Below are some of my favorite long-exposures photographed using the Nightsea and a Canon 70d.  I also included some comparison photos under white light.

Beautiful cherry blossoms under blue light, Okinawa-Japan

Cherry blossum under blue light

Cherry blossom under blue light

Cherry blossum under blue light

Cherry blossom under blue light

Psychedelic cherry blossoms

Psychedelic cherry blossoms

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Cherry blossom |white light

Sunflowers show some fluorescence under blue light, Okinawa-Japan

Sundflower under blue light

Sundflower under blue light

Sunflower under white light -zoom panning

Sunflower under white light -zoom panning

The animal must not move in order to get a sharp image during a long-exposure.

Rhinoceros coconut  beetle under blue light

Rhinoceros coconut beetle under blue light

Rhinoceros coconut  beetle under white light

Rhinoceros coconut beetle under white light

Onomustus kanoi fluorescence

( Onomustus kanoi ) fluorescence photography

Cicada under blue light

Cicada under blue light by Shawn Miller

Cicada under white light

Cicada under white light

The Rosy gypsy moth (Lymantria mathura) Under blue light

The Rosy gypsy moth (Lymantria mathura) Under blue light

The Rosy gypsy moth (Lymantria mathura) Under white light -

The Rosy gypsy moth (Lymantria mathura) Under white light –

More flowers painted with the Light & Motion Nightsea

Flowers under blue light

Flowers under blue light

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Flowers under blue light

IMG_6392

Cactus under blue light

Mochi leaf flower under blue light

Mochi leaf flower under blue light

Flower under blue light

Flower under blue light

Light-painting with the Nightsea and Sola 600 red light

Light-painting Okinawa

Light-painting Okinawa

Blue light comparison (450nm) with UV (385)

Blue 450 vrs uv385

Blue comparison – 450nm vrs uv 385nm

Equipment used

  • Light&Motion Sola Nightsea or Gobe blue light
  • Modeling light Gobe 700 wide (white light) to lock in focus
  • Camera with Manual capabilities and macro lens (Canon 70d *60macro)
  • Manfrotto Tripod and remote
  • Barrier filter (block the reflected blue light )

My above water camera setup for fluorescence

Fluorescence photography setup -Shawn Miller

Fluorescence photography setup -Shawn Miller

The Light & Motion Nightsea Dive light.

Sola NightSea underwater blue light

Sola NightSea underwater blue light

My underwater setup for photographing fluorescence.

fluorescence-004

Friends and supporters – Save 20% off your first Light & Motion purchase https://prz.io/648x6bGC1

I want to thank  Light & Motion and Nightsea for all their continuous support over the years.