Ofu is part of the Manu'a Island group, about 100 kilometres east of Tutuila and a 30-minute flight on a small plane. It's connected to its twin island Olosega by a short bridge.
The National Park section of Ofu protects a long stretch of white coral sand beach and a 350-acre fringing reef — among the healthiest coral ecosystems in the US Pacific. The snorkeling is exceptional: high coral coverage, clear water, and a wide range of fish and marine life. Bring your own gear from Tutuila, as there's nothing to rent on Ofu. Before you go, check with National Park staff about current conditions and any special rules.
The beach is fine coral sand and largely deserted. You can walk it for long stretches without seeing another person.
Getting there requires booking a flight from Pago Pago well in advance. Schedules are limited, and weather cancellations are common. Accommodation is basic — a small number of family guesthouses and the NPS Ofu Unit campsite. The quietness is the point.