Big Blue Diving, Koh Tao offers great diving on a budget. A range of fun dives and dive courses are offered. The training is well delivered, with a high standard and emphasis on safety. Where dive equipment is provided, it is sometimes a little old and worn but looks to be well maintained. Fun dives are reasonably priced. Dive leaders are organised and provide customers with useful friendly advice on safety and local conditions. You may even see a whaleshark or two!