Do fish snooze?: "The Reef at Night," 7 to 9 p.m. March 21, Waikiki Aquarium. Must be 5-years-old and over, and accompanied by an adult. Cost: &4 adult, and $6 child. Members pay $1 less. Pre-register at 923-9741.
Zoo by Moonlight: Tour the Honolulu Zoo by the light of the full moon, 7 to 9 p.m. March 21 through 24. Costs $7 adults, $5 children. Purchase tickets in advance at cashier's office.
Art classes: "Art and Animals" slideshow with Patrick Ching, 6:30 to 7:30 p.m. March 22, Naturally Hawaiian Gallery, 41-1025 Kalanianaole Highway in Waimanalo.
Weekly pencil, acrylic and oil painting classes with Patrick Ching begins April 5, Naturally Hawaiian Gallery, 41-1025 Kalanianaole Highway in Waimanalo. Limited enrollment. Register at 259-5354.
Easter baskets: "Make a Coconut Frond Basket for Easter," 8:30 to 11:30 a.m. March 22, Lyon Arboretum, teaching greenhouse. Cost: $19.50 nonmembers, $15.50 arboretum members. Limited enrollment. Call 988-7378.
Kealia Trail Hike: Ken Suzuki leads a challenging five-mile/five-hour hike up the side of the Waianae Range above Dillingham Airfield, March 22. Cost: $5 Hawaii Nature Center members, $7 nonmembers. Reservations required. Call 955-0100.
Taro Patch party: Work in a taro patch, 9:30 to 11:30 a.m. March 23, Hawaii Nature Center. Cost: $5 members, $7 nonmembers. Reservations required. Call 955-0100.
Crocodile Crawl: The Honolulu Zoological Society's sixth annual fun run features a crocodile adoption kit for young winners, 7:30 a.m. March 23. Adult winners will receive Zoo Society memberships. Courses of one, two and three miles circle the Honolulu Zoo and Kapiolani Park. On-site registration begins 6 a.m. Entry fee, which includes the after-crawl party, is $18 adults, $16 children, $15 for families of three or more, $13 for groups of 10 or more. Call 926-3191.
Hawaii Loa hike: Moderate hike with Ron Fenstemacher does get steep and muddy, 8:30 a.m. to 3 p.m. March 29. Costs $9. Call Lyon Arboretum at 988-7378.
Lyon Arboretum hike: Ray Baker gives a guided tour of favorite valleys and ridges, pointing out early plantings, 9:30 a.m. to 12:30 p.m. March 29. Mosquito repellent recommended. Costs $9. Register at 988-7378.
Fishing Tournament: Entries for the Sixth Annual Ulua Fishing Tournament sponsored by Kimura of Hawaii will be accepted until March 29. The tournament will be held from noon April 4 to noon April 6. Proceeds will go to the Catholic Charities' community services and programs. Prizes range from $200 to $1,000 provided there are 100 entries. Cost: $45 adults, $5 children. Call 537-6321.
Tai Chi Chuan: Chinese art reducing anger and stress, and increasing softness and flexibility, 4:30 to 5:30 p.m. Mondays and Thursdays in Kekela Gym, Queen's Medical Center. Cost: $35. Register at 547-4780. For other classes, visit the center's website at http://www.queens.org.
Easter Store: Opening of the Kalanianaole Arts League's store featuring over 50 local artists and crafters, 10 a.m. to 6 p.m. through March 29, Koko Marina Shopping Center. Portion of the proceeds will be donated to a charity.
Honolulu Marathon Clinic: Weekly jogging program with Dr. Jack Scaff Jr., 7:30 a.m. Sundays, Kapiolani Park Bandstand. James Honke leads a 6:30 a.m. program Sundays, Wahiawa Recreation Center.
Taiko classes: The Taiko Center of the Pacific offers classes through Kapiolani Community College. Call 737-7236.
Hawaii In-Line Skating Association: Workouts 5:30 p.m. weekdays at Kakaako Park. Call 988-5299.
Free hike to Diamond Head: Meet the Clean Air Team at the Honolulu Zoo entrance, 9 a.m. Saturdays. Three miles to the top. Call 948-3299.
Honolulu Community Drum Circle: Drummers, percussionists and dancers gather, 1 to 5 p.m. Saturdays, Keehi Lagoon Park. Potluck. Call 377-DRUM (377-3786) to confirm location each week.
Hash House Harriers: Social runs with Aloha group 3 p.m. Saturdays; call 948-AHHH (948-2444). Or Honolulu group 5:30 p.m. Tuesdays; call 948-HASH (948-4274).
Honolulu Marathon Clinic: Free training runs with Jack Scaff and staff, 7:30 a.m. Sundays, Kapiolani Park Bandstand. Call Norm at 247-4957. No meetings on three-day weekends.
Night reef walk: Waikiki Aquarium staff talk about ocean creatures and their habitat on a tour of the reef, April. Costs $8 adults, $7 children. Register by mail. Call 923-9741.
Sports Acrobatics Hawaii: Hawaii Highflyers Trampoline Club for adults and kids, 4 and 5 p.m. Mondays and Wednesdays, McCully Recreation Center. Call Karl Vorwerk at 949-3747.
Waikiki Acrobatic Troupe meets 4 p.m. Sundays at the beach across Kapiolani Park Bandstand; free workout at UH Studio Four 8 p.m. Wednesdays. Call Don Heafner at 536-7205.
Ikebana classes: Lillian Koide teaches flower arrangement 9 a.m. to noon Wednesdays at the Japanese Cultural Center. Tuition $30 per month plus supplies. Call 537-5765, evenings.
Honolulu Zoo: Zoo opens at 8 a.m. on the first and third Wednesdays of the month. General admission $6; $2 with Yum Yum Tree senior card. First Wednesdays feature a botanical tour at 8:45 a.m. for $2 more. Third Wednesdays, tai chi practice begins 8 a.m. Call 971-7174.
Nature Conservancy hikes: Two guided hikes a month to Honouliuli Preserve, home to more than 45 rare native plants and animals. Donation. Call 537-4508.