Will the biomass bonk whales on the head when it’s transported to the basin?

No, we make sure the whales are safe, though we think this question should extend to all ocean animals.  We work in regions that avoid whale migratory routes and seasons. We choose to store biomass in an anoxic zone because of its natural toxicity to multicellular life, which means we have a very low probability of hurting animals in the ocean of any type.  

What is the net sequestration in your process?

Our estimate is that we will have approximately 83% carbon efficiency at a small scale, and greater than 90% at a large scale.   

Will biomass breakdown release methane?

That is a great question and one of the first we asked ourselves.  Methane is a problem when it reaches the atmosphere, or is in high enough quantities to harm marine life.  We are researching how much methane will be produced to understand the safe level of biomass storage in a given zone.

Will placing biomass in an anoxic zone hurt the ocean ecosystem?

No, we test our biomass to make sure it is free of pesticides and harmful agricultural chemicals.

Will biomass release pesticides or other hazardous chemicals into the ocean?

The oxygenated ocean ecosystem is separated from the anoxic basin by a strong density gradient. This means that the basin is isolated from the open ocean over timescales of thousands of years. With responsible operations, this process will support a healthier ocean with minimal ecosystem risk.

What made you think of doing this type of CDR?

Climate change is a huge risk to the wellbeing of all species on earth.  We tasked ourselves with trying to find a way to durably sequester carbon with minimal environmental risk and the ability to scale to a gigaton level.  Our science team has been working for years on the question of how Earth naturally stores organic carbon, and this inspired us to try and speed up this natural process.

Plants Play a Pivotal Role in Shaping Atmospheric CO2 Concentrations


Safety is the key goal at every step of Carboniferous’s process. It’s essential that we achieve safety and protection in every aspect of what we do.

Learn More
Anoxic Basins

Anoxic basins, often referred to as 'dead zones,' are crucial ecosystems with oxygen-depleted waters that are highly pertinent to carbon sequestration

Learn More