Irrigated land:
0 sq km
Natural hazards:
Ile Amsterdam and Ile Saint-Paul are inactive volcanoes; Iles Eparses subject to periodic cyclones; Bassas da India is a maritime hazard since it is under water for a period of three hours prior to and following the high tide and surrounded by reefs
volcanism: Reunion Island - Piton de la Fournaise (elev. 2,632 m, 8,635 ft), which has erupted many times in recent years, including 2010, is one of the world's most active volcanoes; although rare, eruptions outside the volcano's caldera could threaten nearby cities
Environment - current issues:
introduction of foreign species on Iles Crozet has caused severe damage to the original ecosystem; overfishing of Patagonian toothfish around Iles Crozet and Iles Kerguelen
Geography - note:
islands component is widely scattered across remote locations in the southern Indian Ocean
Bassas da India (Iles Eparses): the atoll is a circular reef that sits atop a long-extinct, submerged volcano