As a die hard muck diving fan,
Allow me to try.
Muck diving isn't always 'muck' like all the definition that you gave. It's more referring to macro diving, dive sites where we can find a good diversity of small and interesting critters. It could be sandy bottom, rocky terrain, but it's not 'muck' as mud, it might more understandable if i call it macro diving.
I would pay good money to be able to do muck diving, as the matter of fact, I will miss it if I only see big stuff in my dive trip. The best muck/macro diving I've visited so far, you might have heard of their reputation also;
- Lembeh Strait in Menado, Indonesia
- Tulamben and Seraya, Bali, Indonesia
- Secret Bay, Bali, Indonesia
- Puri Jati, Bali, Indonesia
- Mabul and Kapalai, Malaysia
My first experience doing muck was in Secret Bay, Bali. This site might be the best to describe the 'muck'. So what qualities do we look for when we dive:
1. Fish, many fish : You can't find it here, you don't even see a single fish during your first few minutes.
2. Colourful coral : I'm talking about sandy bottom, all the way, north, south, east, west, all you can see is sand.
3. Great visibility : I don't think so, put one diver with poor buoyancy, he/she would stir up everything, because, it's sandy.
4. Healtly and clean water : My first muck diving, five minutes into the dive, I found potato chips packet, detergent package, slipper and bra.
5. Glorious depth : Secret bay lies a mere eight meters below the surface.
But as when i started to wonder, our DM showed us a stick. What the...when we got a closer look, it was a bent-stick pipe fish, disguise perfectly between sand and algae. Then he pointed at one decaying leaf, and it was a robust ghost pipe fish, another 'dead leaf' was a cockatoo waspfish. And a pile of small dirty rock was snake eel, it was all five minutes into the dive.
When we know the game rule, we started to train our eyes and spot more and more new, bizzare and interesting things. Fifteen minutes into the dive, we saw triplet of harlequin ghost pipe fish.
There are many bizzare species that we hardly find in other type of diving that we saw in those locations: rhinopias, flying gunnard, star gazer, dragonet, pegasus sea moth, hairy frogfish, bobbit worm,
with more effort in rocky terrain, the rewards are harlequin shrimp, boxer crab, in sea urchin coleman shrimp etc.
So, even if I can't fulfill the need of 1,2,3,4,5,
Muck diving is a very fun and rewarding:
6. especially for divers attracted to macro photography. Small critters in muck area provide great object for photography because they have camouflage as self-defense, and they are confident enough that they won't be seen by you and let you take whatever shots you want.
7. unlike pelagic diving, muck diving doesn't really rely on luck. If you know how to find the critter, you can find them, instead of waiting for big fish to come, you can actually 'hunt' them. It's much easier to do so if you have knowledge about their habitat and their food.
8. usually shallow diving, one-two hours is very fast when you enjoy it, and AL80 is sufficient for value for money diving.
9. It's highly addictive once you are hooked. I prefer to be active and look for small things rather than wait and hope that big things come to me.
My buddies had taken great pictures but for my self, I just started with camera, and it hasn't been equipped with good macro lens, so I don't have much photos to share yet.
But goggle for Lembeh and places that I mentioned and you can find many beautiful pictures.
Hope that can answer you questions?