Fig. 3
From: Large-scale facilitation of a sessile community by an invasive habitat-forming snail
Photographs of major shell types: top from left: large and live B. australis, B. paiva, and N. pauperatus; Middle from left: buried large live B. australis with dense G. comosa, close-up of attachments of holdfasts, and B. australis shell occupied by hermit crab covered in Pomatoceras polychaetes; Bottom: example of ‘graveyard’ consisting entirely of B. australis shells