Reefgen’s Grasshopper robot is ready for deploying into Washington’s Puget Sound where it’s helping with an eelgrass restoration effort.

ReefGen first engineered a robot named Cora that plants coral plugs onto reefs to help regenerate them. Cora provided the foundation for Grasshopper – the startup’s seagrass planting iteration.

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The robot emerged, its cheery yellow buoy and tether trailing behind it. Grasshopper, which is about the size of two milk crates, motored over to a bare, sandy patch in the shallow bay.