PEANUT BUTTER CLUB: Presents the video “Sealab” on Friday, September 13, at noon, in Redfield Auditorium, 45 Water St., Woods Hole. Sealab tells the little-known story of the daring program that tested the limits of human endurance and revolutionized undersea exploration. Sponsored by the WHOI Visitor Center. Coffee, tea, and cookies served. Donations accepted.