Integrated intensity distribution of H I overlaid on DECalS g, r, z image. White column density contours outline the detection showcased by the panel. Grey contours are background or foreground H I sources. Lowest contour is shown in the top left. All other contours are 3ⁿ multiples of it. The SFR, stellar, and H I masses are in the bottom of each image. The arrow points towards the centre of the Coma cluster, with its projected distance in Mpc (d_c) and the H I source’s velocity offset relative to the systemic velocity of the cluster (v_c). The WSRT synthesised beam is in the lower left corner. Fully coloured circles indicate the H I morphological classes: settled (blue), one-sided asymmetry (yellow), or unsettled (red).