Climate Central: Just west of Los Angeles, decimated populations of spiny rockfish rummage for prey among bush-like corals. Cold currents from deep valleys wash nutrients between the Channel Islands, fertilizing plants that are eaten by fish. The fish are eaten by dolphins and pelicans and served with fries to diners watching ocean sunsets from Venice Beach.
Rockfish populations that crashed off the southern Californian coast in the 1990s have been protected by fishing rules and marine parks. But climate change...