Only got through a few paragraphs before the paywall. Theoretically, from a "big food chain" perspective, it is true that eating algae directly at the bottom of

Only got through a few paragraphs before the paywall. Theoretically, from a "big food chain" perspective, it is true that eating algae directly at the bottom of the food chain is more energy efficient, since each link in the food chain only transfers about 10% of its energy upwards. But the reality is not that simple. China tried to implement the consumption of chlorella during the famine years decades ago, and it proved to be a complete failure.