The inland is swampland surrounded by hills. Tumbak is located on a tip of narrow cape surrounded in the North by an expansive mangrove forest and a fringing reef in front of the village. Bentenan-Tumbak's coral reefs cover 193 hectares, mangroves 213 hectares, and seagrass beds 61 hectares. In season, Bentenan fisherfolk collect milkfish fry. The catch is sold directly, or salted, smoked, or dried.
Some villagers cultivate seaweed or catch aquarium fish.
In Tumbak, villagers harvest lobster, crabs and aquarium fish. Villagers farm coconut, cloves, vanilla, corn, cassava and several varieties of fruit. Coconuts are processed into copra or coconut oil. The Bentenan Beach Resort provides reasonable overnight accommodations. The resort is giving employment opportunities to villagers.