Art Projects

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Floating art, including art boats, is an essential part of the Ephemerisle experience.

Projects for 2015

Central Platform

The central platform was a key component for many a year's Ephemerisle. Platform projects require enough money for build materials and storage. 20'x28' is a popular size.

Past projects:



CubeShip, Ephemerisle 2014. Photo by Judd Weiss.
A giant floating structure supporting multiple layers of hammocks.

More pictures at CubeShip Construction 2014

Artist: Matt Bell

Hot Tub

The Hot Tub Boat/Hot Lagoon/Lagoon of Terror, Ephemerisle 2014. Photo by ??.

A sunken hot tub, using a sheet of neoprene to separate the hot water from the cold.

It took 50 gallons of propane in rented tanks, an entire roll of 1/4 inch neoprene, 2 above ground pools, 5-10 cans of 3m 80 spray adhesive, 150' of PVC pipe, and several hundred wo-man-hours on everything from gluing insulation, to building and decorating the shade structure, to repairing the hot tub heater and filtration system.

[Tilt funding]

Artist: Jane Huang

Meditation Platform

Meditation Platform, Ephemerisle 2014. Photo by Alton Sun.

A quiet space in which to recharge without any social pressures.

[Tilt funding]

Artist: Laura Salcido

Titan Platform Painting

Twister Platform, Ephemerisle 2014. Photo by Tyson Macdonald.

The best decorated place to dance!

Artist: Jen Zariat

Twister Platform

Twister Platform, Ephemerisle 2014. Photo by Matt Bell.

Player One: "Let's play Twister!"
Player Two: "None shall pass!"

Artist: Adam Katz


Rooftop Zomes

Zome, Ephemerisle 2013. Photo by Tyson Macdonald.

Rooftop Zome, curated by Candice Achenbach. Made by Rob ?

Artist: Candice Achenbach, Ephemerisle 2013, 2014

Blanket Fort Island

Blanket Fort Island / SS Shit Show, Ephemerisle 2013. Photo by Matt Bell.

Barrel float island constructed mostly from found materials.

Artists: LAbikecult


Turtle, Ephemerisle 2013. Photo by Lisa Fabiny-Kiser.

Rooftop Turtle and cuddle room.

Artists: Joanna Bresee, et. al.

Platform 9 3/4

Platform 9 3/4, Ephemerisle 2013. Photo by Tyson Macdonald.

A floatilla of pool rafts anchored to a spot part way between the islands. It served as both a remote get-away and a rest stop for swimmers between the islands.

Artists: Tyson Macdonald and Darryl Hunt, Ephemerisle 2013, 2014

Space Dolphin ??

Space Dolphin ??, Ephemerisle 2013. Photo by Matt Bell.

Animated lighting of a dolphin rising up to a small flying saucer.

Artists: David and Candy Smith

Hyper Cube ??

HyperCube, Ephemerisle 2013. Photo by Matt Bell.
A floating jungle gym structure with PVC pipes and pool noodles.

Artist: ???


Cuddle Gallery

Cuddle Gallery, Ephemerisle 2012. Photo by Matt Bell

This 24'x28' platform and dome was the coziest place at Ephemerisle - a place to admire art, exchange ideas and dream!

With lots of padding and pillows on the floor, this shelter from wind and sun was a chill space for festival attendees, showing art during daytime and evening hours. After hours this was a sleeping space for many of those who helped make it happen.

Art on display included the Jellyfish and paintings by Kristy.

Artists: Kristy Hilands, Candice Achenbach, Christopher Rasch

The Bearded Lady

The Bearded Lady, Ephemerisle 2012. Photo by Stephen Payne - Paynie

Be the Bearded Lady.

Artist: Gerry Deckert; Ephemerisle 2012

Lemonade and Lasers

Lemonade and Lasers, Ephemerisle 2012.
A floating lemonade stand with lasers, and maybe underwater lights too!

Details at:

Past Kickstarter

Artist: Bonnie Barrilleaux; Ephemerisle 2012


Jellypus, Ephemerisle 2012. Photo by Matt Bell.

A massive underwater octopus-like light show.

The Making Of Jellypuss: Featuring Michael Clive

Past Kickstarter

Artists: Michael Clive & Cyprien Noel; Ephemerisle 2012, 2014

Original design: Jellypus


Jellyfish, Ephemerisle 2012. Photo by Matt Bell.

A tent with LED lighting and tentacles hanging from the ceiling.

Artists: Joanna, Ping, & Helen


Water Slide

Water Slide, Ephemerisle 2011. Photo by Ka-Ping Yee

A semi-floating water slide for quick boat evacuation.

Artist: Erin Rapacki; Ephemerisle 2011, 2012

Pyramid / Reed Forest

Pyramid and Reed Forest, Ephemerisle 2011. Photo by Matt Bell

A floating pyramid structure made of PVC tubing and pool noodles.

Artist: Joseph Kisenwether

Reed Forest
A floating array of vertical pool noodles mounted on a submerged wooden structure.

Artist: ??

Cuddle Tent

Cuddle Tent, Ephemerisle 2011. Photo by Scott DeRoy

A colorful and semi-private place to snuggle up.

(Not a sex tent.)

Artist: Matt Bell, Kate _?; Ephemerisle 2011

Tilting Game Platform

Tilting Game Platform, Ephemerisle 2011.

This 8'x 8' platform is designed to hold up to 2 people and allow them to tilt the platform and thus roll a ball by moving around. There are lots of interesting interfaces you could get out of having one or more people control a ball in this manner. It would be a chance for people to hone their sea legs in a game of balance. The platform could be reconfigurable, with different surfaces added or removed to switch games.

Details at: and

Artist: Matt Bell and Kate _?; Ephemerisle 2011


The Relentless Artstead Boat Project

The Relentless Artstead Boat Project, Ephemerisle 2010.

Facebook group:


From their site:

Our mission is to create a mobile community resource on which to explore the possibilities of art, performance, and seasteading while bringing boating into the world of art and art into the world of boating. Crew members from the project "Swimming Cities of Serenissima" by the artist Swoon have teamed up with an all star crew of Bay Area artists to salvage a 1945 hand crafted houseboat. We plan to convert the boat into a mobile artstead in the ad-hoc style of San Francisco's unique D.I.Y. arts community.

The Seasteading Institute has provided funding for the purchase of the boat and the rest is up to us! The boat has been lifted out of the water, repaired, and inspected. Once underway we have been utilizing recycled materials, including a converted Mercedes diesel car engine, to make the vision come to life. The next step is to move The Relentless from her current location in Bethel Island to the San Francisco Bay where she will continue to evolve through community input and ingenuity.

Collaborators include: Ben Burke, Anja Ulfeldt, Anton Bertaux, Chicken John Rinaldi, James (Skippy) Cross, and many many more to come.

Dandelion (aka, the world's largest koosh ball)

Dandelion, Ephemerisle 2010.

Made from close to 300 pool noodles, the Dandelion was the Epic Pool Toy of Not-Ephemerisle 2010.

More information at

Artist: Matt Bell


Floating Swing

Floating Swing, Ephemerisle 2009.

The floating swing was one of the interactive toys from Ephemerisle 2009.

Artist: Dav Yaginuma

Ripple Theater

Ripple Theater, Ephemerisle 2009.

The Ripple Theater used the ripples in the water as an analog ray-tracer to create trippy visual effects from a projector's image. People dancing on platforms nearby created ripples in time with the music, which then created synced visuals on the screen.

Details at

Here's Matt Bell's blog post on Ephemerisle 2009 with pictures of all the art projects that year:

Artist: Matt Bell; Ephemerisle 2009


Flowers, Ephemerisle 2009.

Floating flowers with nighttime lights.

Artist: Anja Ulfeldt's

Turtle Boat

Turtle Boat, Ephemerisle 2009.

Artist: Unknown; Ephemerisle 2009

Achievement Lounge

Achievement Lounge, Ephemerisle 2009.

People who reached the end of the path to the Achievement Lounge got free beer. Then they had to try to get back.

Details at

Artist: Matt Bell; Ephemerisle 2009.


Apocaisle, Ephemerisle 2009.

Apocaisle was an impressively large two-story pirate boat from Ephemerisle 2009.

Creators include Paul Bohm and many others.