I go there to see Mola-Mola
Well, actually there are quite variety of diving sites in Bali, from muck diving in Secret Bay, Tulamben, etc., wall diving in Menjangan, wreck diving in Kubu & Tulamben, to Pelagic diving in Crystal Bay, Manta Point in Nusa Penida. Diving in Bali is like going on safari in Tanzania. You rent a car, a DM & a driver & start the Diving Safari from Gilimanuk on the north west end of Bali, diving in Secret Bay, Menjangan on day 1, then go east to Pemuteran, next day to Kubu, Tulamben, Seraya, next day to Candi Dasa, next day to Padangbai, next day to Nusa Penida. Each dive sites are different than the others.
What do I think about diving in Bali? We'll, let's the numbers of my diving destinations speak for themselves. I've been diving in Raja Ampat 5 times, Komodo 3 times, Bunaken once, Lembeh twice, Maratua Atoll once, Wakatobi once, Alor once....and drum rolls, please... Bali 9 times.
