mmmm. but do you or anyone have any idea what the energy density might be for such a system?

Imagine we automate seeding and harvesting hundreds of square miles via robotic systems (which we could). What would be the calorie per day per square meter of ocean surface be? I just fear if it automation were free, it would still not be enough to justify it.

I also worry if one DID do such a thing, it would be SOOOO much larger production of shells than existing marine environments have today, it might really deplete calcium in the water or something like that.

I just wonder, has anyone tried to do an analysis of what massive scaling of this might look like, and whether it could happen. Feels like something would break if you really tried to scale this for planet feeding. (but if not it would be amazing, since it jumps right from plankton to something that vertebrates can eat.