**This blog entry orginally appeared on the website oceanspaces.org.**/p>

See information below posted on our Facebook account. Does anyone have information to share about similar observations or potential avenues for further investigation?

Cal Spill Watch – Office of Spill Prevention and Response (OSPR) added 2 new photos to the album Long Beach mussel colony disappearance — at Port of Long Beach.

23 hrs ·

A team of scientists from OSPR’s Natural Resource Damage Assessment team (NRDA) and Scientific Response Unit recently visited pier piling and shoreline locations affected by the Feb. 2011 M/V Aljalaa Spill in the Port of Long Beach. Based on initial observations, there was concern that the mussel colonies present and affected by the Aljalaa spill might have experienced a significant die-off almost 3-and-a-half years after the spill (see before and after pics). But the reconnaissance showed that the loss of mussel colonies was not limited to areas affected by the spill, leading the team to conclude the spill was not a potential cause for the disappearance. OSPR has notified University of California researchers and marine biologists familiar with mussel life history and biology, as well as toxicologists familiar with water quality in Southern California. So far it is not known why the mussel colonies have disappeared from the pilings.