About this 3D model

Photogrammetry scan of a starfish shell I got in Croatia in 1998.The scan was repaired to have a perfectly flat bottom and no holes. The pictures for photogrammetry were taken with an iPhone X and Meshroom was used to reconstruct the model following this tutorial:https://www.prusaprinters.org/photogrammetry-2-3d-scanning-simpler-better-than-ever/