Submarine structures made by leaking gases
Spectacular submarine complex structures, consisting of rocks, pavements and pillars up to 4 m high. These formations are due to the aggregation of sandstone by a carbonate cement resulting from microbial oxidation, mainly methane. The methane most likely originated from the microbial decomposition of fossil plant materials. The formations are interspersed with gas vents that intermittently release gas. These formations shelter a highly diversified ecosystem with brightly coloured species.
|EU Habitats Directive||Annex I habitat type (code 1180)|
|EU conservation status by biogeographical region||Marine Atlantic - Unknown|
|Marine Black Sea - Favourable|
|Marine Macaronesian - Unknown|
|Marine Mediterranean - Unknown|
|Habitat type||Not priority|
|Natura 2000 sites||28 are designated for this habitat type|
EU conservation status
Conservation status assesses every six years and for each biogeographical region the condition of habitats and species compared to the favourable status as described in the Habitats Directive. The map shows the 2007-2012 assessments as reported by EU Member State. Assessments are further detailed in the summary document available behind the link below.
Species mentioned in habitat description
|Species scientific name||English common name||Species group|
Natura 2000 sites
Protected in the following Natura 2000 sites
Protected sitesPlease note the site map takes a while to display.
Mentioned in the following international legal instruments and agreements
Relation to habitat classifications
|Classification||Code||Habitat type name||Relationship type|
|EUNIS Habitat Classification 200711||A5.711||Bubbling reefs in the sublittoral euphotic zone||same|
|EUNIS Habitat Classification 200711||A4.73||Vents and seeps in circalittoral rock||overlap|
|EUNIS Habitat Classification 200711||A5.71||Seeps and vents in sublittoral sediments||overlap|
|EUNIS Habitat Classification 200711||A3.73||Vents and seeps in infralittoral rock||overlap|