Tahanea Atoll is located in the central region of the Tuamotu Group, which is part of French Polynesia. We knew very little about Tahaena Atoll, apart from what we could see on the charts, so our visit was an expedition stop. Tahanea Atoll is quite large, measuring 48 km (29.8 mi) long by 15.2 km (9.44 mi) wide. The wide and deep inner lagoon covers about 525 km² (200 mi²) and the land area covers about 8 km² (3 mi²). There are three passes on NE side of the atoll that give access to the interior lagoon, and the middle one (Teavatapu) is wide enough and deep enough to have allowed us to bring our ship right inside for an anchorage. The southern reef fringing the atoll is wider than the northern one, but the largest islands are on the narrower northern rim. There once were several small settlements here, but today Tahanea is uninhabited, although it is visited occasionally by islanders from neighboring atolls. Small groups of people come to the island seasonally to harvest coconuts and produce copra.