Curated News
By: NewsRamp Editorial Staff
October 13, 2026
Origami-Inspired Seaweed Farm Could Scale Open-Ocean Carbon Sequestration
TLDR
- Seaweed OAS from Zhejiang University unlocks 10,335 million hectares of ocean for scalable carbon sequestration and commercial seaweed farming.
- The origami-inspired shell slows currents and stores nutrients, yielding 17 times more suitable growth volume than a spherical reference.
- This modular system enables open-ocean seaweed farming, boosting carbon burial and providing sustainable food, feed, and biomaterials.
- Ancient Chinese folding patterns inspired a dodecahedron-like shell that creates calm microhabitats for seaweed in turbulent open oceans.
Impact - Why it Matters
This news matters because it offers a scalable, low-cost route to expand seaweed aquaculture beyond coastal waters, where current and nutrient limitations have stalled growth. Seaweed farming is a powerful nature-based climate solution, burying carbon at twice the rate of adjacent unfarmed areas, but its open-ocean potential has been largely untapped. The Seaweed OAS could enable cultivation for food, feed, biomaterials, and carbon sequestration without existing offshore infrastructure, potentially sinking carbon-rich biomass to the deep ocean for long-term storage. With global mapping identifying 28.5% of the ocean as suitable, the system could help mitigate climate change while supporting marine industries. However, long-term field trials are needed to verify ecological impacts and carbon persistence, so this breakthrough is a promising step that demands further research.
Summary
Researchers at Zhejiang University, with collaborators at Guizhou University and the Ningbo Innovation Center, have unveiled a modular, origami-inspired aquaculture system that could unlock open-ocean seaweed farming. The Seaweed Origami-inspired Aquaculture System (Seaweed OAS) uses a shell-core structure to slow local currents, provide attachment surfaces, and store slow-release nutrients. In simulations, a single unit under 2.0 m s⁻¹ currents produced a suitable growth volume 17 times larger than a spherical reference, and optimized six-unit arrays raised per-unit suitable volume 2.1-fold. Laboratory, lake, and open-ocean trials in the Philippine Trench region confirmed stability, and global mapping identified 10,335 million hectares of potentially suitable waters. The team published (DOI: 10.1016/j.ese.2026.100769) the study online on 28 September 2026 in Environmental Science and Ecotechnology.
Seaweed aquaculture is a nature-based climate solution: macroalgae contribute roughly 1.5 petagrams of carbon to global annual net primary production, and farm sediments can bury about 1.87 tons of CO₂e per hectare per year—twice the rate of adjacent non-farmed areas. Yet open-ocean expansion is limited by strong currents and dilute nutrients. The Seaweed OAS overcomes these hurdles with a dodecahedron-like shell assembled from 12 variant pentagonal units, each combining an origami-inspired shell, an internal nutrient space, a central buoyancy ball, and connection seats. Using computational fluid dynamics, the researchers optimized the folding ratio φ; the best single-unit design (φ = 0.36) produced 2,791.6 cm³ of suitable growth volume at 2.0 m s⁻¹. A six-unit Hexagon 2 layout with 0.35 m spacing achieved 33,210.3 cm³ total suitable volume, 2.1 times an isolated unit. The modules, 3D-printed with polylactic acid and water-soluble polyvinyl alcohol supports, showed a safety factor of 293 in compression tests.
The authors say the design turns an ancient folding idea into a practical marine tool. “By reshaping flow around each module, the system creates quiet microhabitats where seaweed can attach and grow, while the same module stores slow-release nutrients,” they said. Cooperative wake interactions in the optimized hexagonal array let upstream units shield downstream units, boosting per-unit suitable volume. However, they caution that long-term cultivation outcomes, deep-ocean carbon storage, and ecological effects of material degradation remain unverified. If validated, the Seaweed OAS could support open-ocean seaweed cultivation for food, feed, biomaterials, and carbon sequestration, with connection modules that could eventually break apart to sink carbon-rich biomass to the deep ocean.
Source Statement
This curated news summary relied on content distributed by 24-7 Press Release. Read the original source here, Origami-Inspired Seaweed Farm Could Scale Open-Ocean Carbon Sequestration
