CHILDREN’S MUSEUM AND THEATRE OF MAINE Visit “What About Whales?’’ an exhibit in which Istar, a life-size inflatable whale, is lowered so that you can climb inside and learn all about how the mammal functions in her natural environment. Tue-Sat 10 a.m.-5 p.m., Sun noon-5 p.m. Free-$9. 142 Free St., Portland, Maine. 207-828-1234, www.kitetails.org