Ice stalactite
downward-growing hollow tube of ice enclosing a plume of descending brine that is formed beneath developing sea ice
en-US/ˈaɪs stəˈlæktaɪt/
en-GB/ˈaɪs ˈstæləkˌtaɪt/
downward-growing hollow tube of ice enclosing a plume of descending brine that is formed beneath developing sea ice