Marie Griesmar

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Marie Griesmar

Biodiversity Climate Change

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Marie Griesmar is the Co-Founder and Chief Operating Officer at rrreefs, a Swiss firm pioneering modular 3D-printed solutions for coral reef regeneration. She is an artist, diver, and science communicator, leveraging her skills to raise awareness about marine life and sustainable ocean ecosystems.

Marie Griesmar

Jun 12 2026

The window to invest in the ocean's reefs is closing

Illuminem Voices

Adaptation · Climate Change

Swiss startup rrreefs has beaten its funding target and put a new reef in the water as its crowd investing round approaches its close

A wooden table with a typewriter, glasses, notebook, and pen placed on top.

Recent publications

Marie Griesmar

Jun 08 2026

This Swiss startup is rebuilding the ocean's reefs, and investors are diving in

Adaptation · Climate Change

This Swiss startup is rebuilding the ocean's reefs, and investors are diving in

Josephine Graf

Jun 03 2026

The ocean is dying – this Swiss firm might hold the answer

Adaptation · Climate Change

The ocean is dying – this Swiss firm might hold the answer

The words 'dream big' written on a black wall

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