Scientists search for clues in sea star die-off | Teacher Tools and Tips |
Outbreak has devastated several species along North America’s Pacific coast this year.


Among the possible causes scientists have suggested for the wasting syndrome are low oxygen levels in coastal waters, localized areas of warm water and environmental toxins. Some researchers have suggested that ocean acidification is a possible factor, but Raimondi says that is unlikely, given that acidification is pervasive but the disease outbreak is occurring in patches.