MTH-CTK Hydrophone Float

With the Float, you can set hydrophones (underwater microphones) adrift to follow the sounds flowing around tree roots.
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updated October 29, 2025

Description

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The More-than-Human Community Toolkit (MTH-CTK) is an open-source toolkit that uses affordable imaging and sound technologies to empower communities as agents of pro-environmental and pro-social change.

What does the world sound like to a tree? What does it hear? What does it sense?

With the Float, you can set hydrophones (underwater microphones) adrift to follow the sounds flowing around tree roots. The float can also be used in conjunction with the Selfie Stick Adaptor for accurate placement. It is compatible with hydrophones that use either a standard XLR cable or a 1/4" (6.35 mm) jack, for example, the D Series+ by Jez Riley French.

Printing
• Printed in PLA
• 0.2mm layer height
• 3 perimeter walls
• 25% infill

Credits
The Float, along with other tools and attachments from the “Listening Like a Tree” project, are part of Reperceiving Communities: Prototyping the More-Than-Human Community Toolkit – a collaboration between the School of Design at Goldsmiths, University of London; the Angela Marmont Centre for UK Nature at the Natural History Museum; and Phoenix Community Housing, funded by the Arts and Humanities Research Council.

Art Direction: Mike Thompson and Tobie Kerridge
Design: Nick Williamson

Instagram: @mthctk

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The author marked this model as their own original creation.

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