  We show that very simple theories of abelian gauge fields with a cubic
Chern-Simons term in 5d have an infinite number of non-invertible co-dimension
two defects. They arise by dressing the symmetry operators of the broken
electric 1-form symmetry with a suitable topological field theory, for any
rational angle. We further discuss the same theories in the presence of a 4d
boundary, and more particularly in a holographic setting. There we find that
the bulk defects, when pushed to the boundary, have various different fates.
Most notably, they can become co-dimension one non-invertible defects of a
boundary theory with an ABJ anomaly.
