Events happening Saturday

Go Green Expo This is a behemoth of environmentally conscious events and presentations, the kind that would bring a smile to Al Gore's face. The highlights include the Blue Planet Film Fest, presentations on sustainable investing, "eco-logical" homes, green jobs and free yoga classes. Los Angeles Convention Center, 1201 S. Figueroa St., South Hall J, Los Angeles. 10 a.m. to 6 p.m. today., 10 a.m. to 5 p.m. Sun. Weekend pass, $10. www .gogreenexpo.com.

Malibu Pier Whale Watching Excursions California State Park Rangers lead 2 1/2 -hour boat trips into the Pacific on a search for gray whales. The noble creatures are in the midst of their annual trip between Mexico and the northern Arctic seas. You could also catch a glimpse of dolphins, sea lions, pelicans and other marine life. Malibu Pier, 23000 Pacific Coast Highway, Malibu. 10:30 a.m. and 1:30 p.m. today and Sun. $30-$45. (310) 456-8031. www.malibupier.com.

ART

Los Angeles Art Show The colorful exposition will have more than 100 international exhibitors, a lecture series and special events. Highlights include a sculpture garden, art exhibits and installations, and a fine art fair that will offer viewing and sales of prints, including antiques and the works of modern masters. L.A. Convention Center, 1201 S. Figueroa St. 11 a.m.- 5 p.m. today to Sun. $20. (213) 741-1151. www.laartshow.com.