Islanders celebrated the warm weather on the first day of summer on June 21 with swimming at Luther Burbank Park.

Island youth, from left, June Kissel, Amanda Tsang, Marissa Tuttle-Roache, Ashley Sun, Delaney Clark and Shannon Cavanaugh leap into Lake Washington as their friends, in the background from left Michael Krebs, Mark Hermans, Sasan Salman, Chris Rorem, Rachael Kovar, Olivia Snell and Stephanie Silke look on at  Luther Burbank Park on the first day of summer on Mercer Island, June 21, 2011. The groups organized a going away party at the park for classmate Michael Hall who is moving out of state.