this interactive map tracks the oil s activity from may 7th all the way through today. you can see how it hits different points along the coast there. one of the first places the oil hit was grand isle, louisiana. it also hit the home of one of the nation s largest estuaries. it s a nursery really for baby shrimp and baby redfish. if you look at this map that we created, you can see how the oil keeps moving east and west. it s been working its way around the mississippi delta, hitting pelican island two weeks ago. in mississippi, 240 pounds of tar balls were picked up in a single day last week. tar balls have been found in waveland, gulfport and biloxi. also today, tar balls were found in lake pontchartrain, the lake that flooded during hurricane katrina. just today we confirmed tar balls are as far west as galveston, texas. in fact, look at these photos from a couple cnn ireporters in