Town North YMCA presents Healthy Kids Day on Saturday to help children stay active and healthy this summer. Activities include dancers, martial arts, jump roping, an inflatable, face painting, McRuff the crime dog, a fire truck, police command unit and more.

Fish City Grill at Preston and Forest hosts Oyster Fest at 3 p.m. Sunday, featuring an oyster-eating contest, crawfish, beer and live music. The event is free, but donations raise money for the March of Dimes. There is still time to register to compete individually or in teams before happy hour Friday. Call 214.891.9979.

The Jewish Community Center’s J Book Fair ends this Sunday with children’s book author Ann Koffsky. At 3 p.m., she’ll present “Noah’s Swim-a-thon” about the magic of Jewish summer camp. It’s free, but RSVP 214.239.7193.

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