I came across this organization today called Environment Tasmania. They work with wildlife, forests, and oceans. Some of what they offer seems to be marine surveys, a petition to sign, options to write letters to politicians, articles, reports, newsletters, and information, a video series, a take action section, and other ways to help this incredibly unique area by volunteering, donating, or using the provided resources.
Check it out here: Environment Tasmania (et.org.au)