The column is a vertical structure of about 1.6 m in height with an internal horizontal cross section of 20.3 x 30.4 cm and is made of clear 1.9 cm thick Plexiglas®.
 
The column is made of two parts: a moulded section, bent at high temperature, that forms the sides and the back, and a flat section glued to the moulded section to make the front. A thermally insulated glass panel is affixed to the front to avoid surface water condensation and to facilitate the observation of organisms inside the column (B).

An 11.5 cm diameter opening at the base of the column allows access to the inside for cleaning the bottom and, eventually, will be used for the attachment of a mechanism allowing the introduction of organisms at the base of the column.