Explore the protected Cabbage Tree Aquatic Reserve on this eco-tourism-certified snorkelling tour. Learn about Australian environments, heritage and the culture of Sydney on a headland nature walk. Then, cool off by snorkelling in the calm, clear waters off Shelly Beach, Manly on Sydney's northern beaches. Snorkel to see Australia's diverse marine wildlife in their natural habitats. Visit seagrass meadows, sandy bottoms, and rocky reefs.