Measurements of interest to estimate the orientation and body-size of Pinna nobilis. In situ can be measured: W and w, maximum and minimum width respectively; UL, unburied length and Or, orientation of the gape. Maximum shell length (Ht) and length of the buried part (h) can be measured by removing the specimens from the bottom. Besides, Ht can be estimated by applying specific mathematical models (Garcia-March and Vicente 2006).

 
 
  Part of: Marrocco V, Sicuro A, Zangaro F, Pinna M (2018) First record of the protected species Pinna nobilis (Linnaeus, 1758) in the Aquatina Lagoon (NATURA 2000 site IT9150003, South-East Italian coastline). Nature Conservation 28: 51-59. https://doi.org/10.3897/natureconservation.28.26112