COCONUT ISLAND VOLUNTEERS — Training starts Oct. 1 for walking-tour interpretive guides at Hawai'i Institute of Marine Biology's Coconut Island. Must be at least 16 and able to lead one tour per week; minimum six-month commitment. Contact Jennifer Barrett at 236-7415 or jen.barrett@hawaii.edu.

CHUN'S REEF CLEANUP — Join Adopt-A-Beach Hawaii and Save The Sea Turtles International at noon today for Chun's Reef Beach highway and coastal cleanup. Trash bag, gloves and purified water provided; bring hat, sunscreen and beach shoes. Meet at 61-529 Kamehameha Highway, Hale'iwa. See www.seaturtlesinternational.com or call 637-2211.

ALA WAI CLEANUP — Join the Sierra Club for an Ala Wai Small Boat Harbor cleanup Saturday. Meet at 8 a.m. at the harbormaster's office. Bring sturdy shoes, hat, thick rubber gloves, sunscreen, water. Call Deborah Blair, 955-4168.

WANTED: ALLIANCE LEADERS — Windward Ahupua'a Alliance looking to fill director and key volunteer positions by Oct. 1 to continue operations and qualify for grants. Call 247-6366, ext. 1, 224-4496, or visit www.waa-hawaii.org.

KANE'OHE WETLAND PROJECT — Volunteers needed Oct. 13 to help the Sierra Club clear a wetland of mangrove to create habitat for endangered water birds at Marine Corps Base Hawai'i. Because the base is a secured military facility, volunteers must provide name and Social Security number in advance and bring a signed waiver. Call Deborah Blair, 955-4168.

CRATER OVERNIGHTER — Stay over at Holua Cabin on a Friends of Haleakala National Park service trip to weed heterothica Oct. 20-22. Call 808-248-7660.

LIMAHULI HELPERS — Kaua'i's Limahuli Garden & Preserve of the National Tropical Botanical Garden seeks volunteers to restore native forest Thursdays, 8-11 a.m. Call Lahela Correa, 808-826-1053, or Lea Taddonio, 808-332-7324, ext. 228.

NATURE CENTER WORKDAYS — Hawai'i Nature Center weekly volunteer workdays are 10 a.m.-2 p.m. Saturdays at the new location, 2131 Makiki Heights Drive; call 988-8995. Tasks include power-washing trailers, painting, planting.