These are models, largely made of glass, of marine invertebrates made by the father-and-son team Rudolf and Leopold Blaschka in the late 1800s. Originally made as educational models, they are now in collections in over 50 institutions around the world. Major collections are at Cornell, the Corning Glass Museum, Harvard and University College, Dublin. The models at Cornell and Harvard were imaged by myself, David Brown (Cornell) and Jon Woodward (Harvard) and the models at the Univ. of Dundee were imaged by Caroline Erolin.