Hatohobei, commonly referred to as "Tobi", is located some 450 KM southwest of Angaur. Hatohobei State which includes Tobi island and Helen Reef, covers a combined area of approximately 630 square meters. Like Sonsorol people, Tobi's people are culturally and physically different than the other people of Palau. The island is miniature platforms of raised reef composed of coral-line limestone and have sandy soil and beaches. Tobi Island is only a few feet above the sea level, with a depressed swampy interior (the result of Phosphate mining during the Japanese administration) and coconut palms lining the beaches. Like sonsorol, the primary industry is Copra Production.
Today, the island are largely uninhabited as most of the population (as with the people from Sonsorol) migrated to Koror or Ngerekebesang island in the State of Koror. Even so, the natives retain a strong sense of cultural pride in their heritage and a firm commitment to their islands.
Like the people of the Sonsorol state, Hatohobei people share cultural heritage that shows close ties with people of central Caroline Islands. The migration of these people to Tobi is considered a truly remarkable event in the prehistory of the Pacific.

Registered Sites:

• Iporu (Menstrual Hut); 
• Ferehuheh (Still-born babies burial site); 
• Bonuyong (Rruul er a rechad ra Siabal, WWII);
• Matahong (Blirir a Rsoldau, WWII); 
• Japanese Pier/ Hatoba (Underwater Pier); 

Helen Reef

• Helen Reef.