Celebration of Oysters begins at 6:30 p.m. at the Port Hunter, Main street in Edgartown. Katama Bay is open and oysters are available. Film about oyster shellfishing with discussion to follow. Cost is $32 for Slow Food members, $40 for nonmembers. Includes hors d'oeuvres and dinner. Fundraiser in collaboration with Slow Food and Martha's Vineyard Shellfishermen. Call 508-645-5000 or visit slowfoodmarthasvineyard.org.