2021 Inktober52 Prompt#24: X-Ray

I had the idea for this weeks ago when it was time for that week's prompt.  Today (a couple of weeks late) I drew it.  The same sting ray with fins up drawn rotated 180 degrees below itself to make it seem like all of the fins created an X shape.  My other idea was to draw an x-ray of a sting ray and, even though I had found an appropriate reference image online, I deemed it too hard to get the x-ray effect on that one.  So, this one was chosen instead.  I can't post this (or the other 2 sketches I've done today for prompts #25 and #26) yet, as I still haven't done prompt #23, as that one has stumped me.  Update: Done prompt #23, so now this can be posted.