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Glass tardigrade

Hypsibius exemplaris, 152 µm long, rebuilt from a whole-body X-ray nano-CT at 270 nm voxels, with the higher-resolution head scan registered in. We named and meshed the organs Gross et al. (2019) segmented, traced the body and fitted the leg muscles. Click an organ for what the literature says about it. The colours are the animal’s own organs pushed into the range fluorophores emit at, after Harry, Hibshman, Damatac et al. 2024, who stained live H. exemplaris with LysoTracker Green, TMRE and NucBlue. Everything except the outer shell is see-through.

Structures

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Show the CT scan on the cut face (drag Cut to see it) Colour storage cells by volume Scale references beside the animal

20 µm grid

Data: Gross V, Müller M, Hehn L, Ferstl S, Allner S, Dierolf M, Achterhold K, Mayer G, Pfeiffer F (2019) X-ray imaging of a water bear offers a new look at tardigrade internal anatomy. Zoological Letters 5:14, doi:10.1186/s40851-019-0130-6, CC BY 4.0. Meshes built from their image stack and label fields; structure names matched to their Table 1 (items marked probable or unidentified are our identification). Head scan registered onto the whole body by us.