Left: false color HST image of the reflection nebulosity (red-to-yellow) and Hα-emitting lobes (blue) of OH 231.8+4.2 (Credit: ESA/Hubble & NASA. Acknowledgement: Judy Schmidt. Visit https://www.spacetelescope.org/images/potw1705a/ for more details). As in the rest of the figures, north is 21° right of vertical. Right panels: ALMA order-zero moment maps of ¹²CO (3–2) integrated over the full width of the line profile (color-scale) and over selected LSR velocity ranges (grey-scale; the V_LSR ranges are indicated in each panel in units of km s⁻¹). The two bubble-like structures (or fish bowls) of the molecular envelope detected for the first time with ALMA in this work are indicated together with their counterpart in the HST image.