Gabo-Tullabergo is a 5.2-kilometer-long sandy beach located within Croajingolong National Park in the Shire of East Gippsland. It is a large, cuspate foreland protruding over a kilometer seaward, situated in the lee of Gabo Island to the east and Tullaberga Island to the west. The beach has a southern orientation, which exposes it directly to the dominant southerly swell, with average wave heights exceeding 1.5 meters. This exposure creates a wide, 350-meter surf zone characterized by two shore-parallel sandbars. The inner bar features alternating attached bars and deep rip currents spaced approximately every 300 meters, followed by a deep trough and an outer bar also cut by occasional rips. Access for paddlers launching from shore is extremely limited, as the beach can only be reached on foot via a 7-kilometer walk along the beach from Mallacoota Inlet or by boat. There is no dedicated parking, facilities, or amenities for paddlers at the beach itself. The strong westerly winds prevalent in the area blow sand into blowouts and sheets, which can contribute to challenging conditions. The beach is unpatrolled and carries a general hazard rating of 6 out of 10, with no surf lifesaving services provided. A notable historical feature is the wreck of the ship Riverina from 1923, located toward the eastern end of the beach. The surrounding area is part of the protected Croajingolong National Park.