Nice job Paul, a striking image, again, with a bit of that solid plastic look (not really a critisism)
If I may give you a bit of feedback though... your processing here is juuuust verging on having an obvious processed look to it. This isn't always a issue and many fine images are not of "natural" look or colour but the colour hues here look just a bit out to me so as not to render it as eye pleasing as it could be... with the reds looking a little burnt orangy purpleish..y

, the colours kind of clash and don't go...in a fashion sense

. It looks just a bit clipped in the outer regions too? As has been mentioned M8 has a lovely soft blue hazzy nebulousity surrounding and in front of it too and this looks beautiful when captured.
Hope I don't sound picky or waffly...The lagoon is a striking object and you have certainly done this aspect plenty of justice...I am sure Marc just loves it

..but hopefully these observations are of some use
Mike