Meromictic lakes are poorly mixed and anoxic bodies of water with strong vertical stratification. While meromictic lakes are frequently categorized as bodies of water with the potential for euxinic conditions, many do not exhibit euxinia. Meromictic lakes are infamous for limnic eruptions. These events usually coincide with nearby tectonic or volcanic activity that disturbs the otherwise stable stratification of meromictic lakes. This can result in the release of immense concentrations of stored toxic gasses from the anoxic bottom waters, such as CO and HS, especially from euxinic meromictic lakes. In high enough concentration, these limnic explosions can be deadly to humans and animals, such as the Lake Nyos disaster in 1986.