U.S. Coast Guard Marine Scientist Mike Gribbon holds a sample of a tar ball on Big Pine Key, Key West, Wednesday. TIM CHAPMAN/MIAMI HERALD STAFF

Scientist from the U.S. Coast Guard in Key West look for evidence of oil along the shoreline on Big Pine Key, Key West on Wednesday. TIM CHAPMAN/MIAMI HERALD STAFF

Jennifer DeMaria picks up garbage off the wild shoreline on Big Pine Key in Key West on Wednesday. TIM CHAPMAN/MIAMI HERALD STAFF

Florida Park Service Ranger Kip Blevin wades in the water to pick up tiny tarballs along the shore at Zachary Taylor Park in Key West. MIKE STOCKER/SUN SENTINEL / S-S