(CNN) — One year after the chocolaty crude started spewing out of the bottom of the Gulf of Mexico, leading to the largest accidental oil spill in history, scientists say they’re still trying to piece together what’s happening to the environment.
Some potential clues about the impact of the spill have made themselves known: dead baby dolphins and sea turtles; oiled brown pelicans; fish with strange sores; sticky marsh grasses; tar balls on beaches.