The logbook is similar to a diary where it records all the relevant data of each immersion carried out, so that a control over them can be carried out. It must be completed after completing a dive, completing the available fields. For this there are leaf types, more complete and more simple. You must choose…

Activity little known by the general public, in Spain it is possible to practice it in some specific places, although the poles are the paradises of these adventurers The two poles are the most exciting places to practice diving under ice (Cordon Press).   Without being cataloged as extreme, it does have a clear component…