Habitat classification is a key requirement for mapping of sea bed habitats at a range of spatial scales. There are several classification schemes globally, and several national classifications have been developed in Australia. Habitat classification schemes are designed to allow classification of benthic habitats using data derived from a range of different sampling techniques. Habitat classification schemes must be flexible to allow 'top-down' (working from environmental to biotic components) and 'bottom-up' (working from biotic to environmental components) classification, as one can be more effective than the other for different sampling technologies and data. Habitat terminology can also be ambiguous - for example the terms 'habitat' and 'biotope' are often used synonymously. What is a 'biotope', and what is its value to habitat classification? The objective of this presentation is to discuss the relative benefits and challenges of current habitat classification schemes to environmental impact assessment and management from an end-user's perspective, and to demonstrate that habitat classifications have more scientific and management value than simply for characterising mapping units.