Kirchenpaueria pinnata is a medium sized delicate hydroid which was found growing on a
Posidonia oceanica leaf at 7m depth, but has been reported froma variety of substrates.It can grow up to 100mm and is considered an Atlantic-Mediterranean species.
This specimen was identified and described in detail (p. 187 & Fig. 4c-d) in the following
paper published (2013) by Soto Àngel and Peña Cantero.