I recently went travelling around asia stumbled upon Gili Trawangan when i went to bali. Sure enough i went there because i heard the reef and marine life is pretty insane. I went scuba diving with Blue Marlin who are a tec school and have a very popular reputation. i have to say they were very professional yet still laid back enough you can have a good laugh with them. i did a number of dives and can honestly say they were some of the best dives i have ever done. the conditions are great, visibility is high and although there is current, each dive is planned so that you drift dive and never have to kick against it. The instructors and staff are all very friendly and welcoming. They have a couple of the most experienced divers in the world, including world record holder for longest dive Will Goodman. Things you can see are endless, turtles, nudibranchs, damsel fish, anemonefish, trumpetfish, sweetlips, batfish, trevally, snappers, barracuda, jellyish, seahorses, reef sharks, shrimp, cleaner shrimp, groupers, bumpheads. There are too many to continue! I would really recommend this place and this company to anyone who is thinking of coming to south east asia, especially bali.