Sea Sponge
Getty Images |
 

A Fine Balance
The thriving sea sponges in this image from the Caribbean Sea could be at risk as the oceans warm due to climate change, suggests new research. At about 30 degrees Celsius -- the same temperature threshold that appears to cause coral bleaching -- some of the native microbes the sponges depend on for survival begin to die out. | Video: Discovery Earth

 
 
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