Collection of observed radio continuum emission of ORCs. The upper row shows a MeerKAT image (left) of ORC 1 (Norris et al. 2022) and a GMRT image (right) of ORC 4 (Norris et al. 2021a). The middle row shows an ASKAP image (left) of ORC 5 (Koribalski et al. 2021) and a newly discovered ASKAP image (right) of ORC 6, showing a double ring feature (B. S. Koribalski et al. 2023, in preparation). The lower row shows on the left an ASKAP image of a newly discovered object (CLOVERLEAF; B. S. Koribalski et al. 2023, in preparation) and on the right a MeerKAT image of an also recently discovered object named SAURON, produced using the data presented in Lochner et al. (2023). Each panel has a size of ≈1 Mpc × 1 Mpc.