The more immediate threat from increased CO2 is not global warming, as bad as that is, but ocean acidification. Just like adding CO2 makes soft drinks fizzy and acidic, so adding CO2 to the atmosphere makes the oceans more acidic.
Among the immediate effects of more acidic oceans is to make many warm, deep zones inhospitable to life. This has already happened near Long Beach, Ca.
If you have the time, this public outreach lecture from the National Academy of Science by the Dr Brewer of the Monterey Bay Aquarium lays out clearly what is happening, including some pretty depressing videos of what is currently occurring at depth offshore of California.
If this acidification effect has taken hold near Baja, as it has near southern California, then one would expect the long-lived keystone species such as Oarfish to leave the depths in search of food.