Haualshore Island was originally part of the Boulder Bank, but was formed in 1903 by pioneer settlers dredging a channel (The Cut) through the southern tip of the Boulder Bank to improve shipping access to Port Nelson.
The island is home to a colony of pied shags, little blue penguins and a rare skink. Nelson Nature is working with a number of community partners, including Port Nelson, Nelmac and the Boathouse Community Trust to restore native vegetation and plan predator control on the island.