The Edgartown Yacht Club’s gala festivity of the year took place Friday night at the club when children from 10 to 18, and an even greater number of adult spectators, gathered for the annual fancy dress ball. Carrying out the theme of Denizens of the Deep in Fact and Fiction, the decorations, painted by Ruth Appledoorn Mead’s art class, consisted of flat models of fish and other sea animals hung from the ceiling and adorning the walls. Balloons were also strung above the dance floor.