Mapping Plastic: Aquaculture’s Styrofoam Beaches

Day 5: Pleasant Beach to Fort Ward Boat Ramp

This article is part of a survey of Bainbridge Island’s 53-mile coastline. We’re circumnavigating the entire island to collect and make observations of the kinds (and amount) of plastics we see along the way to try to answer the question: Where does it come from?

The single-most prevalent plastic we find on our beaches, in our citizen-y-science-kind-of-way, is polystyrene. There’s so much of it, we see it in every shape, from tiny single particles the size of a snowflake to car-size chunks.

Styro-mobile. This car-sized chunk came riding in on the sea. © Liesl Clark

Styro-mobile. This small car-sized chunk came riding in on the sea. © Liesl Clark

But wait, this other one is just 300 yards down the beach. © Liesl Clark

But wait, here’s another enormous one just 300 yards down the beach. © Liesl Clark

Where are these huge styro-chunks coming from?

They’re used underneath floats and docks. The aquaculture industry is known to utilize polystyrene to keep their operations afloat. But nature eventually takes its course. Boring isopods damage expanded polystyrene floats under docks and, in the process, they expel copious numbers of microplastic particles. This paper describes the impacts of these mini drilling marine isopods in aquaculture facilities and docks and the resultant pollution the isopod-infested styrofoam is causing.

Here’s an opening statement in the article (I’ve taken out all of the references for ease of reading):

Like other microplastics (defined as <5 mm in diameter) in the marine environment, these particles may have detrimental effects to marine organisms. Plastics persist for hundreds to thousands of years in normal oceanic conditions. Also, polystyrene fragments and other minute plastics in the marine environment are readily colonized by biofilm and other organisms causing them to sink. Thus, these particles may interact with benthic and pelagic organisms. Ingested microplastics may cause both toxicological effects by transmitting bioaccumulating toxins and possibly physical effects by occluding feeding structures or inducing a false indication of satiation.

What I get from this article is that these little organisms, like shipworms and wood lice, bore into the styrofoam under floats and docks and in so doing they shed tiny plastic particles into the water, like a drill spewing mini-plastic shavings. The isopods start to feel full, after dining on the stiff white stuff, and eventually die off because their fast food source ain’t so good for them. The little ubiquitous particles end up not only in our bellies, but everywhere. On every continent. They even look like plankton and are now a part of our food chain. Experts, for years, have estimated microplastic particles are outnumbering plankton 6:1 in the marine environment. The bigger fish eat the ever-present plastics and then we eat the fish. End of story. The plastics are now in us, and they’re toxic.

Another little factoid is that mussels and other bivalves raft over the deep blue seas on freed polystyrene floats to foreign lands — lands where they don’t belong, where they’re considered alien and invasive.

Alien bivalves are the plastic-fed zombies of the future.

Unlucky Beached Bivalves © Liesl Clark

Unlucky Beached Bivalves, Rafting on Styrofoam © Liesl Clark

I’ve picked up so much beached polystyrene and other everyday plastics over the years, our personal dumping fees at our local transfer station can be astounding, given we produce as little waste as we can as a family.

Kids love the mints (or is it gum?) that come in these plastic containers. Why do they have to be packaged in a container that will remain here forever? © Liesl Clark

Kids love the mints (or is it gum?) that come in these plastic containers. Why do they have to be packaged in a container that will remain here forever? © Liesl Clark

Aquaculture’s equipment and incidentals are also polluting our beaches.

Shellfish Netting? © Liesl Clark

Shellfish Netting © Liesl Clark

Plenty of this plastic netting washes ashore, nets used to hold mussels or oysters.

We find tons of these:
No clue what this is used for, but it has aquaculture written all over it. © Liesl Clark

Some sort of substrate netting used in aquaculture  © Liesl Clark

 The aquaculture industry has all sorts of specialty items, 100% plastic:
I beg to differ. This specimen is not sea-fit. © Liesl Clark

I beg to differ. This specimen is not sea-fit. © Liesl Clark

 But we can’t blame it all on aquaculture and the marine industry. We’re all responsible for the myriad plastics in the sea that wash up on our beaches. Plastic floats, it’s buoyant and lightweight, it moves with flooding waters and wind. It mostly comes from us, from our homes.

Beached Sign, Tattered By the Sea © Liesl Clark

Beached Sign, Tattered By the Sea © Liesl Clark

The polystyrene that isn’t from marine floats and the aquaculture industry is from us, our fast food takeout containers, styro-block packaging, and packing peanuts flowing into our seas from inland rivers. According to Beachapedia:

The ‘Two Rivers’ study in Los Angeles found that over 1.6 billion pieces of plastic foam were headed to the ocean over a three-day period during surveys in 2004/5. 71% of 2.3 billion plastic items in the survey were foam items and that made up 11% of the overall weight of plastic pollution collected during the surveys.

If that isn’t enough to sound an alarm for you about styrofoam, there are plenty of studies that can fill you in on how polystyrene in the marine environment acts as a sponge for persistent organic pollutants like PCBs and DDT. Chelsea Rochman’s study of the beaches around San Diego shows that the most toxic plastics found in the marine environment is, you guessed it, styrofoam. Her lab fish that ate it didn’t fare so well.

Solutions?
1) Stop using styrofoam: If you mail order a product, ask the shipper to ship it without styrofoam.

2) Refuse takeout containers made of styrofoam.

3) Recycle what styrofoam you can. Our island has a recycle event twice a year for styrofoam and Seattle has a facility that recycles. Just type into your browser “Styrofoam Recycling in (name of your city)” and see if there’s a facility or green organization near you that will take your styrofoam. If not, find the nearest recycling facility (even if it’s a few hours away) and be the person in your community who organizes a styrofoam recycling event on Earth Day each year. Your community will likely get behind the costs of renting a U-Haul to get the stuff to a safe recycling operation.

4) Get out there for yourself and walk your shorelines, river shores, wild places. Pick up what styrofoam you find and start asking questions about where it might come from. Educate everyone you can.

If you’re interested in reading more about the previous legs of this survey, here’s a list of our stages so far:

Special Thanks:

A special shout-out to Julie Skotheim who took time out of her day to join us on this leg of our journey.

Marine "Rope," 100% Plastic © Liesl Clark

Marine “Rope,” 100% Plastic © Liesl Clark

 

Mapping Plastic: The Lost Coast

Exploring Bainbridge Island's Lost Coast © Liesl Clark

Exploring Bainbridge Island’s Lost Coast © Liesl Clark

Who owns the shoreline?

This is the question we’re asking after walking one of the most beautiful stretches of Bainbridge Island’s coastline. The mile-long stretch of nearly house-free shore had very few plastics along it, too. Does this prove that the plastics are washing down into our waters from our homes? Possibly.

Kitchen Sink Scrubby. They're Made of Plastic. © Liesl Clark

Kitchen Sink Scrubby. They’re Made of Plastic Fibers. Try a Plastic-Free Alternative. © Liesl Clark

This gorgeous stretch of beach lies along the southwest side of the island, skirting Port Orchard Bay and leading up toward the Poulsbo Marina in the distance. There’s about 2 miles of water between this shore and Bremerton’s shoreline, and the tidal currents move through here pretty swiftly, leaving little ability for plastics to make purchase ashore. Yet they still do.

Water Skiing Anyone? © Liesl Clark

Water Skiing Anyone? © Liesl Clark

The Lost Coast starts with a hike down the Close Property Trail to the rocky shore. It’s a classic Northwest coastal hike through old douglas firs and ferns, the trail switch-backing down the steep green scape to the water. We turned right and headed north, my two children and one of their good friends. Everyone had a bag in hand, to pick up plastics, or pretty shells and rocks. We had a feeling this stretch of shore wouldn’t have many plastics because we come here often and only find the occasional offender.

Hiking Through Ferns on the Close Property Trail © Liesl Clark

Hiking Through Ferns on the Close Property Trail © Liesl Clark

A high bank leaves jungle for us to enjoy, with a few properties that have carved out a beach presence, stashing their plastic lawn furniture in the brambles. It’ll only be a matter of a few storms before the plastic furniture is set free onto the billowing seas. Some kayaks were imaginatively lashed to trees and a couple of landowners had cool pulley-elevators for getting people and gear down to their stretch of paradise.

The Ever-Present Marine Rope, Made of Plastic © Liesl Clark

The Ever-Present Marine Rope, Made of Plastic © Liesl Clark

But after about an hour, our walk was cut short by a sign indicating we couldn’t pass.

No Trespassing!? © Liesl Clark

No Trespassing!? © Liesl Clark

Can the beach, even at the lowest mean tide, be privately owned? According to The Public Trust Doctrine, passed down from English Common Law, we have the right, especially at extreme low tides, to walk shoreline beaches, to recreate along the shore’s edge. The thinking is that below the common high tide mark, the land is not privately owned. But some homeowners beg to differ and the state of Washington, in particular, has no final judgement on the matter. Can we cross this section of beach at the lowest winter tide possible to continue our beach plastics survey? Or do we have to take up a friend’s offer to ferry us by row boat past this 100 yard stretch of beach to the other side? Fletcher Bay is a narrow residential bay, one of the significant watersheds of our island, that could hold clues to the question of where our ocean plastics are coming from.

Nursery Plant Tags are a common Beach Plastic © Liesl Clark

Nursery Plant Tags are a common Beach Plastic © Liesl Clark

Most people think the plastics in our oceans comes from boats. We’re convinced it comes from our homes. Case in point: Those plastic tags you have in a nursery plant pot, giving you the latin name of your purchase and growing instructions. Do we find nursery plants on boats? No. This culprit has washed down a watershed into the salty sea and we plucked it from Bainbridge Island’s Lost Coast.

Landed Umbrella © Liesl Clark

Landed Umbrella © Liesl Clark

If it has plastic in it, even if a small percentage of it is plastic, you’ll find it on the beach. I don’t think there’s anything made of plastic that we haven’t found washed ashore. The tally from our Lost Coast walk included, shoe soles, lots of styrofoam pieces, motor oil containers, plastic toys, and easily a hundred meters of marine rope.

If you’d like to join us on a leg of our circumnavigation of Bainbridge Island, to see for yourself, just let us know in the comments.

Bainbridge Island's Lost Coast. The Most Plastic-Free Stretch of Beach on the Island. © Liesl Clark

Bainbridge Island’s Lost Coast. The Most Plastic-Free Stretch of Beach on the Island. © Liesl Clark

Read about the previous leg on our circumnavigation of Bainbridge Island.

Mapping Plastic: First Days of Our Journey

Even Point White Pier ain’t plastic-free. We found Chapstick tubes lodged in the cracks. Photo © Liesl Clark

Our journey started on a windy day. Circumnavigating Bainbridge Island to map the plastic on its shores has started off like any other beach walk where we tease plastic detritus from tall grasses, seaweed, and huge boulders. Our friends, Rebecca Rockefeller, David Dale Campbell, and their daughters met us at Pleasant Beach, aka Lynwood Center Beach, and we headed south at the day’s lowest tide in hopes of reaching Point White Pier by dark. But we hit a snag.

Rich Passage is a narrow waterway providing access between Seattle and Bremerton for ferries, submarines and naval boats from the nearby seaports. Strong tidal conditions prevail and a winter shoreline walk along the Bainbridge side of the passage is impossible. Lined entirely with bulkheads, houses built right up to the coast, Rich Passage isn’t actually passable on foot. Our map here shows the section, right at Point White, that we had to skip, but we’ll return at a minus tide in the spring to complete as much of it as possible and collect whatever plastics are plastered to the human-made coast.

Legs 1 and 2 of the Bainbridge Island Plastic Mapping Project. Our Track is in Blue.

It’s a 53-mile circumnavigation we’re undertaking and we’ve done about 2. Beginnings are all about logistics, so the fact that we managed to track our progress by GPS and map it for you here is a huge feat.

Rebecca Rockefeller Inspecting “The Armored Coast,” Photo © Liesl Clark

We resumed our route on the west side of Point White 2 days later and cleaned the armored coast of plastic to Point White Pier, a landmark on Bainbridge where the fishing is good and summer swimmers hurl themselves into Puget Sound’s frigid waters.

According to the U.S. Geological Survey, “One of the largest estuaries in the United States, Puget Sound has roughly 2,500 miles of sheltered coastline, about one-third of which is armored. An increasing regional population and rising sea level will likely increase the pressure for additional shoreline armoring. Bulkheads, seawalls, and other armoring structures protect shoreline properties from damage and loss due to erosion, but armoring can also affect the nearshore habitat that is so important to restoring and preserving the health of Puget Sound.”

The man-made basalt armor of Crystal Springs. Plastics are jammed around the boulders. Photo © Liesl Clark

We see the daily affect of the sea upon the armored coastlines we walk and know climate change and sea level rise will ultimately win out. And studies are proving that armored coasts cause increased erosion on neighboring shorelines and adversely affect wildlife habitats. For us plastic pluckers, the armored coastlines mean there’s little plastic to be procured as there’s no true high tide line. Those plastics will have to deposit themselves somewhere else.

Rope Is Easily Caught in Man-Made Boulder-Strewn Coastline, Photo © Liesl Clark

Marine rope and fishing line is easily found behind and around boulders placed along Puget Sound’s shorelines, a barrier between sea and land but a catchment sieve for ropes and lines. We approach these coastlines with steely knives, our tools to free plastic filament ropes so we can remove them permanently in an effort to prevent future entanglement of marine species. The ropes placed by people to moor or tie down their boats, of course, are left alone. Most ropes we free, we’re able to simply pull from the rocks or pick up from the high tide line.

Some marine rope is reused by our researchers. Photo © Liesl Clark

Every beach walk brings surprises, sometimes in the form of items our intrepid children would like to keep — gifts from the sea — or bizarre relics in plastic that have no purpose on a beach. The new-looking basketball was a surprise, until we found a second one and realized they can’t be uncommon. Then the plastic spongy pig thing brought shouts of joy.

A Pig on the Beach? Photo © Liesl Clark

What the? Photo © Liesl Clark

But it was the white plastic replica sculpture of “The Last Supper” that won first prize this time.

“The Last Supper” on the Beach. Photo © Liesl Clark

What weird stuff have you found on the beach?

Our beach plastics survey would be remiss if we didn’t highlight the usual suspects, like balloons. This is one of the hundreds we’ve picked up in the last year alone.

Balloon and Pool Noodle Washed Up On Bainbridge Island. Photo © Liesl Clark

If you haven’t noticed, balloons blow, and when they have a ribbon attached to them that ribbon gets wrapped up in seaweed or around the necks of curious seals. We’ve seen countless images of seals entangled in plastic. Balloons and their attendant ribbons contribute to this problem. Please consider alternatives to balloons for your next birthday party to help prevent their inevitable migration to the sea. We don’t buy gift ribbon anymore, now that we’ve seen how much of it lines our shores.

Inner Plastic Lining of a Mylar Balloon, Washed Ashore. Photo © Liesl Clark

The Tally So Far:
We’re inventorying our island plastics by item. And so far, the most populous plastics are plastic bottle caps, styrofoam chunks, earplugs, construction zone tape (37 feet), fireworks, pvc piping, snack food bags & wrappers, plastic drink bottles, styrofoam food trays, tape, and 209 feet of marine rope. We’ve recycled the plastic bottles along with any glass bottles and aluminum cans we pick up along the way — just putting what’s plucked from the sea back into our materials economy.

Items of Note?
Three plastic wreath frames presented themselves on a high shoreline bank. In an upcoming post we’ll expose what ecologists say about the affects of throwing your yard clippings and organic waste into the sea. Grass clippings are not good for our oceans, yet we’re finding that Bainbridge Island residents are piling their yard waste and organics along their sea walls so they can be pulled out to sea with high tides and storm events. Hence the wreath frames, nursery tape, plastic plant pots, and those plastic tags that tell you what kind of plant you’ve bought are found all over Puget Sound. If we find things that can be reused, we put them back into circulation. So, we’re proud to note that the two of the plastic wreath frames were shared on our local Buy Nothing group and an island neighbor will use them for upcoming holiday wreath-making. I was inspired by her enthusiasm and reused one for a wreath I made of rosemary clippings from one of our plants. We’re also collecting all golf balls, tennis balls, and beach toys to be reused by local friends.

On a lighter side, we found a very old and rusty plastic lighter from The Derby lounge in Ketchican, Alaska!

Want to join us, physically or virtually, in our adventure around Bainbridge Island on our Plastic Mapping expedition? No need for us to do this alone! Drop us a line in the comments and we’ll arrange a date.