White Island is New Zealand's
most active volcano, located in the Bay of Plenty, 48 km north
of Whakatane. It contains a highly acidic lake which produces
large volumes of steam. When the wind conditions are just right,
that steam can swirl into tornado-like vortices that drift across
the surface of the lake. They look harmless but these acidic
steam devils would cause eye irritation and would sting the skin.