Why do we deplete amount of fish in the sea, but land animals, we eat thrive in numbers?
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We protect the land animals that we eat from predators, from illness, we give them shelter and we feed them. This artificially inflates their numbers so that we can eat them without depleting their numbers. Over generations we have made them even easier to care for, faster growing, more docile, and more productive on less land.
There are many difficulties with farming fish. First, there isn’t a cheap food we can grow for them like hay or corn. Fish eat fish. Second, fish require a lot of space to remain healthy and it’s not very easy to round them up if you let them loose in a large space. Third, it is difficult to protect the fish from predators.
We do farm a lot of fish and we are getting better at it but up until very recently it was lots easier to just scoop them out of the ocean in large nets but we are realizing how harmful that practice has been.
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