Warmed-up oceans reduce key food link

In this handout image released Wednesday Dec. 6, 2006 by NASA, the relationship between ocean temperature and ocean biology are shown during the 1997 El Nio events. Ocean plant growth increased from 1997 to 1999 as the climate cooled during one of the strongest El Nio to La Nia transitions on record. Since 1999, the climate has been in a period of warming that has seen the health of ocean plants diminish. The critical base of the ocean food web is shrinking as the world's seas warm, new NASA satellite data shows. And that's got scientists worried about how much food will grow in the future for the world's marine life. (AP Photo/NASA, HO)

In a "sneak peak" revealing a grim side effect of future warmer seas, new NASA satellite data find that the vital base of the ocean food web shrinks when the world's seas get hotter.

And that discovery has scientists worried about how much food marine life will have as global warming progresses.