MARINE DEBRIS

Learn to help reduce marine debris and protect the ocean, 6:30-8 p.m. Friday at Mokupapapa Discovery Center, Outrigger Keauhou Beach Resort; sponsored by NOAA Marine Debris Program; call 397-2651, ext. 256.

ALA WAI CLEANUP

Join Sierra Club for cleanup of Ala Wai Small Boat Harbor on Saturday. Meet at 8 a.m. at the harbormaster's office. Bring sturdy shoes, hat, thick rubber gloves, sunscreen, water; participants under age 18 must have waiver. Call Deborah Blair at 955-4168.

LAND TRUST FORUM

Jan. 10 is reservation deadline for free O'ahu Land Trust Forum, 8:30 a.m.-noon Jan. 20 at University of Hawai'i William S. Richardson School of Law, which will provide a basic introduction to land trusts. Sponsors include Trust for Public Land, the Army Environmental Center, Office of Hawaiian Affairs, Maui Coastal Land Trust and the law school's Environmental Law Program and Center for Excellence in Native Hawaiian Law. Register: Lisa Keala at Lisa.Keala.Carter@tpl.org or 524-8562.

KALIHI VALLEY WORK DAY

A "makahiki hou" volunteer day will be held 8:30 a.m.-noon Jan. 13 at Kalihi Valley Park, and volunteers are needed to plant native trees, spread mulch and dig bamboo. Bring water, mosquito repellent, sunscreen, hat, long pants, covered shoes, lunch; gloves and tools provided; kids welcome. Register: 791-9469 or lisaf@kkv.net.

HO'OKIPA BEAUTIFICATION

Join the Surfrider Foundation Maui Chapter's 2007 Ho'okipa Surf Classic Jan. 13-14 to raise money for native plant beautification at Ho'okipa Beach Park. Divisions for ages 7 and older; $25 entry fee includes T-shirt. Entry forms and shirts are available online at surfrider.org/maui and at Hi-Tech, Hana Hwy Surf, Ku'au Store. (808) 575-2716 or maui@surfrider.org.

AQUARIUM VOLUNTEERS

Next training is Jan. 16-30 for Waikiki Aquarium Edge of the Reef program volunteers. 440-9020; www.waquarium.org.

ALOHA 'AINA MAUI

Volunteers are needed to pick up trash from roads, beaches, parks and other places for Community Work Day's "Aloha 'Aina" cleanup, 8 a.m.-noon Jan. 20. Special sites include Honokohau Valley, North Kihei Road, Waihe'e, Pu'unene and Kahului Community Center. For site coordinators or to sign up, call (808) 877-2524.

MANOA GUIDES NEEDED

Volunteer guides needed for garden and heiau tours at Manoa Heritage Center. Mandatory training sessions start Jan. 20; contact Susan Lessa at 988-1287.

CRATER OVERNIGHTERS

Friends of Haleakala National Park will conduct reforestation work by planting native plants Jan. 20-22, with accommodations at Kapalaoa Cabin. A separate planting trip will be held Feb. 5-9; volunteers may attend for part or all of week. Details and reservations: (808) 876-1673.

Send listings to: For the Environment, P.O. Box 156, Wailuku, HI 96793; cwilson@honoluluadvertiser.com; or fax (808) 242-1520.