> If we're pulling out more fish from the sea than all those pigs, cows, chickens, ducks, etc., that's gonna leave a mark, eh? The sea is big, though. 3x as la

> If we're pulling out more fish from the sea than all those pigs, cows, chickens, ducks, etc., that's gonna leave a mark, eh? The sea is big, though. 3x as large as the land, and it's mostly teeming with life. It gets just as much solar energy per square km as the land, so it can support a roughly similarly dense ecosystem. The problem is more about what type of fish we like to eat than the sheer volume: if we were willing to make do with krill and plankton we could sustainably consume many times our current intake, but not so when we want cod and tuna.