Yes, you can. I dove at Nusa Lembongan this Mid December. It might not the best time to see the Mola-mola (Sunfish) in the December, but a few days before I arrived Nusa Lembongan there was a sighting of the Mola-mola, several dive center posted the picture on their Facebook Account. So I was hoping to see, but I was out of luck. The Mantas are there year around.
I stayed at Nusa Lembongan from Friday afternoon till Sunday morning, enough for 1 day dive. I had to squeezed in my diving plan while on business trip to bali. I am planning to return this August/September. I highly recommend you stay at Nusa Lembongan, the food are great and they are cheap. I went with WorldDiving and happy with their service. Another Dive operator that are also good is Big Fish. While you are in Bali, I suggest you go Diving at Tulamben too. I suggest you go to Tulamben first, then go to Nusa Lembongan. Tulamben is around 3 to 4 hours drive from the airport from Denpasar. You can ask the Dive center in Tulamben to pick you up. Stay 2 days in Tulamben for diving.
From Tulamben, spend a few days in Bali for local tour and sight seeing. Then go to Nusa Lembongan. You can take the fast speedboat to Nusa Lembongan from Sanur Beach. I used ScootFast boat, it took 30minute to cross to Nusa Lembongan Island compare to 1 hour by traditional boat. I ask WorldDiving to arrange it for me. Hotel Pick-up, drop-off for return ticket cost 450K Rupiah, around 45 Dollar. Stay a few days in Nusa Lembongan. Then you can take the fast speedboat from Lembongan to Gili Trawangan in Lombok. Spend a few days and explore the 3 Gilis in Lombok. From Gili you can purchase a trip or Live aboard to Komodo Island. From Komodo go back to Lombok and back to Jakarta for your international Flight. I am sure you will be happy with this itinerary.
Indonesia has many beautiful dive sites, maybe next trip you can do Wakatobi and other Dives Site in Sulawasi then go to Raja Ampat in Irian Jaya province (West Papua).
I stayed at Nusa Lembongan from Friday afternoon till Sunday morning, enough for 1 day dive. I had to squeezed in my diving plan while on business trip to bali. I am planning to return this August/September. I highly recommend you stay at Nusa Lembongan, the food are great and they are cheap. I went with WorldDiving and happy with their service. Another Dive operator that are also good is Big Fish. While you are in Bali, I suggest you go Diving at Tulamben too. I suggest you go to Tulamben first, then go to Nusa Lembongan. Tulamben is around 3 to 4 hours drive from the airport from Denpasar. You can ask the Dive center in Tulamben to pick you up. Stay 2 days in Tulamben for diving.
From Tulamben, spend a few days in Bali for local tour and sight seeing. Then go to Nusa Lembongan. You can take the fast speedboat to Nusa Lembongan from Sanur Beach. I used ScootFast boat, it took 30minute to cross to Nusa Lembongan Island compare to 1 hour by traditional boat. I ask WorldDiving to arrange it for me. Hotel Pick-up, drop-off for return ticket cost 450K Rupiah, around 45 Dollar. Stay a few days in Nusa Lembongan. Then you can take the fast speedboat from Lembongan to Gili Trawangan in Lombok. Spend a few days and explore the 3 Gilis in Lombok. From Gili you can purchase a trip or Live aboard to Komodo Island. From Komodo go back to Lombok and back to Jakarta for your international Flight. I am sure you will be happy with this itinerary.
Indonesia has many beautiful dive sites, maybe next trip you can do Wakatobi and other Dives Site in Sulawasi then go to Raja Ampat in Irian Jaya province (West Papua).