Cystisoma crystal amphipods

Overview

Cystisoma crystal amphipods inhabit open water rather than consistently riding gelatinous hosts. MBARI describes an almost transparent body, very large eyes and thinly spread retinal tissue. Researchers have watched these crustaceans tear tissue from a comb jelly with their pincers. The account treats several species together; neither its maximum size nor its broad range identifies one particular species.

Bagge, Osborn and Johnsen examined seven hyperiid taxa using electron microscopy. In five Cystisoma specimens they found ordered protrusions on the legs and also documented a layer of tiny spheres. Optical models predicted reduced surface reflection, with the amount depending on wavelength, viewing angle and layer thickness. The abstract explicitly excludes internal light scattering. These structures explain a camouflage mechanism; they do not establish perfect invisibility or certify a generated specimen.

Origins & earliest records

Living genus; modern optical evidence does not date its evolutionary origin.

Evidence & interpretation

Scientific and institutional observations.

Selected bibliography

Documented works and useful reading. This is not a list of every appearance.

1. 01

   Crystal amphipod

   MBARI

2. 02

   Nanostructures and Monolayers of Spheres Reduce Surface Reflections in Hyperiid Amphipods

   L. E. Bagge, K. J. Osborn and S. Johnsen

Family & connections

A source-supported family tree or inspiration record has not yet been compiled for this profile. Related reading below indicates a connection in subject matter, not a proven lineage or creative influence.

References

Sources supporting this profile. Linked pages have their own scope and editorial standards.

1. Research-institution observational accountCrystal amphipodResearch access: 2026-10-12
2. Primary research abstract, Smithsonian repositoryNanostructures and Monolayers of Spheres Reduce Surface Reflections in Hyperiid AmphipodsResearch access: 2026-10-12

Image credits

Modern AI interpretation of transparent amphipod form.

Modern AI interpretation of genus-level form; nanoscale surfaces and species identity are not certified.