Adults with their little ones follow a pathway of shells and stones into a warm tent on the stage, where a gentle seaside scene awaits. Through sand shaping, shadow puppetry and inventive sound effects, the two performers create tender, magical moments of sea turtles, seagulls, fish, dune grass, ships and sky. Most enjoyed by ages 18 months to 4 years. $15. On stage at the Kennedy Center, March 21 to April 1. kennedy-center.org.