Finally some time to report, back into the rat race with a shock! Irrespective of previous opions, I still rate the Seychelles as one of the nicest holiday destinations for a recreational diver to visit, it offers a lovely combination for scuba, snorkeling (especially great for those non- scuba divers and snorkelllers in the family), worlds best beaches (who wants to come back without a tan?), fun island cycling and friendliest people. Only down side is the cost, especially food (for a South African anyway...
The Seychelles is not another Sipidan or Manado (I have been diving there), it does not have the multitude of macrolife, but it has an absolute profusion of reef life - (like swimming in an aquirium) and bigger stuff like sharks, bumphead parrot fish, rays, turtles, Napolean fish, tuna often to be seen. Some divers spotted three manta rays on a dive off Mahe - our dive master who has been there many years said it was a first in the region for him. We spotted schools of Trevelli, Jacks, barracuda, lots of batfish. At Marion Island (40 minutes by boat from Praslin) known for its sharks, we saw 40 plus white tip reef sharks circling in a "shark pit". Also saw blacktips and huge nurse sharks. And swam with a "small" 5 meter whale shark to hearts content, it loved our boat and just came back again and again...(october is season). Huge eels, mostly black-cheel moray but also saw a group of 8 geometric eels. Abundance of the other reef fish - parrot, trumpet, squirrel, lizard, lion, beautiful groupers, big eyes,damsels, butterflies, angelfish, scorpion fish, unicorn fish, trigger, porcupine, puffer, you name it, its there .Also a few we still need to identify, think it is of wrasse family, many extremmely colourful and patterned, a joy to just look at all the intricate detail on the fish bodies in profusion. As mentioned, definately a lack of macro life - saw no ghostpipe fish, very few shrimps, a few nudi's all same type. I am no expert but would say this is due to the lack of coral, especially staghorn, which died around 2000 due to El Nino effect. The good news is that coral is rapidly growing back and nemos and coral critters with them. In Mahe we visited coral gardens where the coral is nearly back to normal - a great site. sadly most places are still in infancy (or todler stage), in the process of recovery.
In summary I would say that if you are an experienced diver on the look out to see the lesser seen critters or an something new to add your list of sea life not seen before, then this is not your scene. if you are a diver loving the sight of an abundance of joyous underwater reef life bursting with colour, shape and variety of big and small marine life -- dont hesitate, the Seychelles will not dissapoint. (If visibility is good, which it was for most of our visit in Oct).
Our diving was done with Angelfish dive centre from Mahe, La digue Dive Centre La Digue and White Tip Dive Centre Praslin. We also snorkeled at many other island inlets during a 4 night catamatan trip (no scuba was done in that time).
Melg, we stayed at a wonderful B/B Aquario Self Catering Apartments (see my tripadviser report) which is one minute away from White tip Dive centre Cote d'or and I can highly recommend it. Very reasonably priced. Other well situated hotel is Paradise Sun and Le Duc de Praslin looked great but definately higher priced than Aquario (somethimes spellt Acquario). Another well situated hotel, cheapest in the area in Berjaya Praslin but very run down. We stayed in the"superior" there on previous visits, its spacious and if you are not fussy, you can consider that too. its next to Octopus Dive Centre). Unfortunately I am not familiar with Acajou. Yes flights to Praslin expensive but cheaper if you book it together with you home flight if you Air Seychelles. You can also get another 10kg for diving equipment from air Seychelles (must apply for this seperately). One can take the ferry Mahe to Praslin which is good on a nice day but no fun if the sea is rough.... I will go for the flight option. Hope this report helps somewhat, I am happy to respond to questions.