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.  

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

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.

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

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.

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.