Autonomous Depth-Cycling Giant Kelp Array Model

Underwrite autonomous submersible open-ocean grid lines that surface during daylight for photosynthesis and submerge to 200m depth at night to absorb cold nutrient-rich upwelling nitrate (producing 50 dry tonnes/hectare/yr of Macrocystis pyrifera kelp in deep pelagic waters). Model blue carbon credits + bio-feed sales, 20-yr IRR.