Teachers from the Cabrillo Marine Aquarium in San Pedro will lead a tide pool walk through Point Fermin Marine Life Refuge. After an introductory slide show at the aquarium, it's off to the beach to observe and identify sea urchins, anemones, hermit crabs and feather-boa kelp. Kids have to be accompanied by an adult, and nonslip shoes and outdoor clothes are recommended.
* Tide pool walk, 3 to 4:30 p.m., beginning at Cabrillo Marine Aquarium, 3720 Stephen White Drive, San Pedro. $1. Beach parking is $6.50. (310) 548-7562.
Favorite carols and seasonal classics make up the program when the Pacific Chorale gives its annual holiday concert, this year called " 'Tis the Season," in Segerstrom Hall. John Alexander conducts the 140-voice chorale, members of the Pacific Symphony and the Pacific Chorale Children's Chorus.
* The Pacific Chorale performs " 'Tis the Season," Segerstrom Hall at the Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa, 7 p.m. $20 to $49. (714) 740-7878.
7:30pm / Music
Can you carry a tune? Judy Wolman's spirited, monthly sing-alongs take a seasonal turn with "Candlelight Carols," an event that puts the spotlight on the audience. Wolman supplies words and music, you supply the pipes.
* Judy Wolman's Sing, Sing, Sing, Jazz Bakery, 3233 Helms Ave., Culver City. $15. (310) 271-9039.
all day: Fair
Chanukah Wonderland, the all-day fair of Jewish culture and entertainment, will be held at Calamigos Ranch in Malibu near Agoura Hills and will include exhibits, music, elephant and pony rides, crafts, a petting zoo and will end with a menorah-lighting festival at dusk.
* Chanukah Wonderland, Calamigos Ranch, 327 S. Latigo Canyon Road, Malibu. 10 a.m. to 5 p.m. Adults, $5; children, $3. (818) 991-0991.
The 80-member All-American Boys Chorus, ages 9 to 14, will lift their angelic voices in "Sounds of Christmas," a holiday family concert of seasonal traditional and classical favorites, with an audience sing-along and a candlelight procession.
* "Sounds of Christmas," La Mirada Theatre for the Performing Arts, 14900 La Mirada Blvd., La Mirada, 4 p.m. $18 to $25. (714) 708-1670.
Ancient West Mexico, an area that includes the present-day Mexican states of Nayarit, Jalisco and Colima, is a region that only recently has been recognized as having been a major cultural center between 200 BC and AD 800. "Ancient West Mexico, Art of the Unknown Region," organized by the Art Institute of Chicago and opening Sunday at the Los Angeles County Museum of Art, showcases more than 200 pieces of Mesoamerican pottery, including human figures, animals and plants, vessels and models of houses, ball games, ritual scenes and ceremonial centers.
* "Ancient West Mexico, Art of the Unknown Region," Los Angeles County Museum of Art, 5905 Wilshire Blvd. Museum hours: Mondays, Tuesdays, Thursdays, noon to 8 p.m.; Fridays, noon to 9 p.m.; Saturdays and Sundays, 11 a.m. to 8 p.m. Ends March 29. Admission: adults, $7; students and seniors, $5; children, $1; age 5 and younger, free. (323) 857-6000.
Freebies: The 38-piece Oaxacan symphonic wind ensemble Banda Xochixtepec will perform from 2 to 4 p.m. in the parking lot of the Museum of Latin American Art, 628 Alamitos Ave., Long Beach. Traditional Oaxacan refreshments will be served with pin~ata-breaking hourly from 3 to 5 p.m. (562) 437-1689.