a wall of air ferns growing on a wooden structure in the green house.

garden plant green leaf branch jungle produce fence wall houseplant air ferns house wooden growing structure species marine animal sertulariidae sea fir neptune dried colonies hydrozoans hydroids hydrozoa phylum cnidaria hydroids corals jellyfish hydroid curiosity decorative indoor plant underwater decorations aquaria plants plants skeletons shells dyed green fernlike branches argentea chitinous animals colony polyp tentacles hydrotheca bryozoa ferns commercially collected by-product trawlers north sea