For anyone who likes what's marketed as Chilean Sea Bass:
The species is overfished, as described in the book "Hooked: A True Story of Pirates, Poaching, and the Perfect Fish" (which, by the way is an excellent read)
And now our appetite for commercial seafood has destroyed the chance to put an area of ocean off-limits to commercial exploitation.
I love seafood, but when I buy it, it's farm raised salmon or steelhead. Pay attention to where your seafood is coming from, and please don't contribute to the depletion of the oceans.
A couple more books on commercial overfishing are by Mark Kurlansky, one on Cod, one on oysters, telling the history of overexploitation and the damages that result.