May 15

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30-9:45 a.m., $110. Get trained to recognize and care for victims of illness and sudden injuries and life-threatening respiratory or cardiac emergencies in adults, children, and infants and learn how to use an AED. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30-9:05 a.m., $70. Learn to recognize and care for victims of life-threatening respiratory or cardiac emergencies and to use an AED on adults. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30-9:30 a.m., $90. Get trained to recognize and care for victims of illness and sudden injuries and learn how to administer CPR and use an AED for life-threatening respiratory or cardiac emergencies on adults. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

NAMI Hawaii Office, 770 Kapiolani Blvd. #613, Sundays from May 8-July 24, 9:30 a.m.-noon, free. Those caring for someone suffering from severe mental illness are invited to discuss clinical treatment options and gain knowledge and skills to cope more effectively. Pre-registration required. (591-1297, info@namihawaii.org)

Honolulu Zoo, 9 a.m.-2 p.m., free. Ride a bike to the zoo and get free admission, a bag of prizes and valet service. (768-8335)

Hawaii Polo Club at Mokuleia, Sundays through Sept. 4, 2 p.m., $12-$10. Hawaii Polo Club holds its 2016 polo season. (hawaii-polo.org)

Moanalua 99, 1151 Mapunapuna St., 10 a.m.-3 p.m., free. Anywhere from 50-120 vendors will sell their wares. (479-5525)

Hawaii Nature Center, 9:30-11:30 a.m., $10. Explore the fleeting world of bubbles, including how insects use them, bubble art and more. Pre-registration required. (955-0100 ext. 118)

Honolulu Museum of Art, Sundays through August, 1:30-3 p.m., free. Learn more about the connections between the Philippine and Renaissance art. Pre-registration required. (honolulumusem.org, cpark@honolulumuseum.org)

Windward Mall, Center Court, 3-4 p.m., free. (235-1143)

House Without a Key at Halekulani, 10 a.m.-12:30 p.m., free. (melemei.com)

Kawaiahao Church, 957 Punchbowl St., 4 p.m., free. All 120 members of Hawaii Youth Opera Chorus sings an original composition, “Okage sama de,” plus other music from around the world. (521-2982, info@hyoc.org)

Kani Ka Pila Grille at Outrigger Reef Waikiki Beach Resort, 5-9 p.m., free. Ku‘uipo Kumukahi performs from 5-6:45 p.m., followed by Mailani from 7-9 p.m. (924-4990)

Kapiolani Bandstand, 2 p.m., free. (922-5331)

500 University Ave., Aloha Room, 11:30 a.m.-3 p.m., free but donations welcome. A fundraiser to help rebuild damaged buildings and schools in Nepal, sponsored by Education International Foundation and Society of Nepalese in Hawaii Association. Enjoy lunch, entertainment, tai chi, a silent auction, door prizes and more. (445-6034, 255-5139)

Pearlridge Center, Downtown Center Court, 1-4 p.m., free. Join local artists in creating collaborative cartoons, sharing work and talking story. (pearlridgeonline.com)

Ala Moana Center, Center Stage, 5 p.m., free. (955-9517)

Windward Mall, Center Court, 12:30-1:30 p.m., free. (235-1143)

Ala Moana Center, Center Stage, 3 p.m., free. (955-9517)

Hanauma Bay Nature Preserve, Education Alcove Classroom, 3-4 p.m., free. Screening of “Papa Mau: The Wayfinder.” (397-5840)