Birds gather around a lone dead horseshoe crab that washed ashore Wednesday morning at Vanderbilt Beach. Florida Fish and Wildlife Conservation Commission tests showed there were high levels of red tide about 18 miles west of Naples Park and about 20 miles west of Keewaydin Island. Researchers also found medium levels of red tide about 10 miles west of Venetian Bay, about 15 miles west of the Naples Pier and about 20 miles west of Doctor's Pass. To report dead fish or red tide symptoms call the Collier County Pollution Control and Prevention Department at 252-2502. Red tide updates are available 24 hours a day, seven days a week on the county's red tide hotline at 252-2591.