During the 2nd International Symposium on “Anchialine Ecosystems” the need to re-define the term “Anchialine Ecosystems” was highlighted, so that over the round-table and more than two years of discussion new definition has been proposed:

“A tidally-influenced subterranean estuary located within crevicular and cavernous karst and volcanic terrains that extends inland to the limit of seawater penetration”

http://booksandjournals.brillonline.com/content/journals/10.1163/1937240x-00002335;jsessionid=1g1irrglxqkte.x-brill-live-03