For the visting (or local) vegan: Where to volunteer (or donate money) on Maui

East Maui Animal Refuge
http://www.booboozoo.org/Volunteer.htm 

Hawaiian Islands Land Trust
http://hawaiianislandslandtrust.org/read-our-blog/

Leilani Farm Sanctuary
http://www.leilanifarmsanctuary.org/

9th Life
http://9thlifehawaii.org/help.shtml

Feline Foundation of Maui
http://www.mauicats.com/

Haku Baldwin Center
http://www.facebook.com/hakubaldwincenter

Hawaiian Islands Humpback Whale National Marine Sanctuary
http://hawaiihumpbackwhale.noaa.gov/involved/volunteer_maui.html