Vegetation is stunted due to being salt-pruned and windswept from the harsh weather conditions. Trees include tea-tree and banksia. Tussock grass in amongst the granite boulders provide nesting habitat for Little Penguins and shearwaters.
The island supports highly significant colonies of seabirds, such as shearwaters and the world's largest known colony of Little Penguins. Birds of prey regularly visit the island from the mainland and many other sea birds can be seen out to sea depending on the time of year. Seals are often seen in a 'raft' off the point from the Light tower. Whales can be sighted as they migrate along the coastline during September and October.