Because they are very concerned about the fishermen and the environment, of course.
(edited for those who may have missed the original threads)
These creatures normally live in the Arctic Ocean, not the Gulf of Mexico, but they’re listed as “sensitive biological resources” that could be affected by an oil spill in the area in a document filed by BP last June with the U.S. Minerals Management Service. More than a month after BP’s Deepwater Horizon rig blew out and sank on April 20, the British oil giant’s regional spill response plan drew some severe criticism from the watchdog group Public Employees for Environmental Responsibility.
http://blogs.reuters.com/environment/2010/05/27/walruses-in-louisiana-eyebrow-raising-details-of-bps-spill-response-plan/