Shellfish respond to increasing acidification in seawater - such as that produced by climate change - by producing lighter, thinner shells.
If you thought reptiles were some of the least intelligent creatures in the animal kingdom, well, you might want to reconsider.
North Pacific fish are eating tens of thousands of tons of plastic debris, say researchers from the Scripps Institution of Oceanography at UC San Diego.
If you are one of the people who buys cage-free eggs because you care about the welfare of the chickens, then a new study might set you off.
Following the Gulf oil spill, many people were surprised by how quickly the oil seemed to disappear. Now scientists say they know where it went - into the food chain.
The tiny algae known as phytoplankton - which form the basis of the entire marine food chain - have been disappearing globally over the last hundred years.