Great Mackerel Beach is a sandy beach located on Pittwater within the Ku-ring-gai Chase National Park. Access to the beach is primarily by water, with a ferry service running from Palm Beach Wharf, or by private boat. For paddlers launching from shore, there is no direct road access or public parking lot at the beach itself; arrival is via the water or by walking from nearby areas. The beach is not patrolled by lifeguards. The water at Great Mackerel Beach is crystal clear. The area is known for abundant wildlife, and the overall character is quiet and secluded, with the beach often being uncrowded. Paddling on Pittwater near Great Mackerel Beach is a noted activity. The beach is situated beside the Currawong Cottages. A nearby paddling route includes Station Beach, Clareville, Biba, and Paradise Beach, which are reachable from this area. Some private properties, such as those on Diggers Crescent, have decks from which a kayak or paddle board can be launched directly into the water, indicating generally calm, protected conditions suitable for such craft at the shoreline.