The Physalia yacht is inspired by the ?Physalia physalis? and it is a whale-shaped design from Vincent Callebaut Architects.

It is a greatest creation combining the nature and the biotechnologies because it can float on rivers and purify water without generating emissions.

This floating garden is 80m in length, 14.9m in width and 11.4m in height, accounting a surface area of 2000 square meters. The roof contains a double pneumatic membrane chiselled with smooth photovoltaic solar cells.

Moreover, the project is crossed in its double hull by a hydraulic network that enables to filter the fluvial water and to purify it biologically thanks to its planted roof.