Figure 1.

Micro-CT image of a 5 cm bill-tip showing (a) the dorsal surface with curved micro-teeth and (b) a cross-section with micro-teeth mainly on the sides of the bill. Sailfish bills were scanned on a Skyscan 1172 (Brucker-CT, Kontich, Belgium) with an effective pixel size of 7 µm, an energy of 65 KeV, 360° scans using an Al filter 500 µm thick. Reconstruction was performed using manufacturer software (NRecon v. 1.6.9.4) and data were visualized (CTvox) and further processed using Fiji [22].