NIWA
irregular clads, scale bar = 200 μm; E, orthotriaene I megascleres with diaene modifications, scale bar = 200 μm; F, orthotriaene I megasclere with monaene modification, LM, scale bar = 200 μm; G, orthotriaene II megasclere with normal clads, scale bar = 200 μm; H, orthotriaene II megasclere with irregular reduced clads, entirely smooth, scale bar = 200 μm; I, sigmaspires, scale bar = 5 μm. Collected by NIWA on Nascent Inter-Ridge Volcanic And Neotectonic Activity (NIRVANA) voyage, funded by the Ministry for Primary Industries, in collaboration with Auckland University, GNS Science (New Zealand), and the University of New Hampshire (USA).