Blueberry hermit crabs in Okinawa, Japan, are resourceful little creatures. Like many beaches around the world, the shores where they live and breed have become progressively covered in plastic.
The shells have to be big enough for a crab to retreat into, snug enough to not fall off, and handy enough so a crab can easily lug it around.
It turns out that bottle caps fulfill these requirements, and hermit crabs are now frequently choosing them for their homes.
If you stroll along the shores of Okinawa, you can see crabs wearing caps from detergent and soda bottles.
Photographer Shawn Miller set out to photograph this strange phenomenon of environmental adaptation to give people a new way to think about the problem of plastic waste.
“Over the years,” Miller told Atlas Obscura, “I continued to find more crabs with trash homes. I noticed more trash piling up on our shorelines searching for hermit crabs and realized it was a serious problem.”
Globally, there are an estimated five trillion pieces of plastic in the world’s oceans.
Plastic poses numerous threats to marine life. It is often mistaken for food and ends up disrupting an animal’s health. It leaches toxic chemicals into the water, breaks down into smaller and smaller particles that ultimately blanket the ocean floors, and its accumulation can cause species to disperse from their habitats.
A few years ago, images of dead seagulls with bellies full of plastic junk swept across the Internet. The seagulls had consumed so much indigestible plastic that they eventually starved to death because their stomachs were full.
article originally published courtesy of globalcitizen.org. Pictures by Shawn Miller.