Can Submerging Seaweed Cool the Climate?

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https://eos.org/features/can-submerging-seaweed-cool-the-climate

By Saima May Sidik, Eos/AGU. 

Excerpt: Running Tide is one of many organizations asking whether submerging seaweed could be part of an effective strategy for mitigating climate change. When these algae photosynthesize, they turn carbon dioxide from the upper ocean into biomass. In some parts of the ocean, submerging that biomass below thousands of meters of water could lock its carbon away for hundreds or even thousands of years, drawing down levels of carbon in the atmosphere. ...But major questions remain. For example, if growing seaweed depletes the pool of nutrients available for other forms of ocean life, then will it actually increase the ocean’s net carbon storage? What happens to ocean bottom ecosystems if humanity creates giant, underwater seaweed landfills? And how will companies monitor the effects of sending tons of seaweed to a watery grave?.... 

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