PlayMakers Repertory Company is offering “And God Created Great Whales” on its PRC2 series this weekend. Written and performed by Pulitzer Prize finalist, Rinde Eckert, the play is a musical journey into the psyche of a composer fighting a degenerative disease as he attempts to create an opera based on “Moby Dick.” Kenan Theatre, UNC. 7:30 p.m. Friday-Saturday; 2 p.m. Sunday. $30-$40. 919-962-7529; playmakersrep.org.