Skill and gear: You do need to learn scuba-diving before you take a plunge into the ocean. The PADI (Professional Association of Diving Instructors) courses are easily available around diving sites and they provide all the gear needed for diving.
When to do it: Even though you can dive almost everywhere and throughout the year, there are two major seasons. The west coast season is between November to April and the east coast season is from May to October.
Cost: Most of the reputed dive centres offer certifications for all types of dives. The open water diver, advanced diver and rescue diver courses may take about 3 to 4 days each, at ₹30,000 per person. This cost includes diving course, transport to the diving sites, instructors and all gear.
Best sites: For colourful corals, the best sites are Bull Dog Reef in Kalpitiya, Gorgonian Gardens in Colombo and Great Basses. For exploring shipwrecks, Taprobane North Wreck or Perseus in Colombo, Taprobane East Wreck in Colombo and SS Rangoon in Galle are the best sites.
Organisers: International Diving School, Poseidon Diving Station and Sri Lanka Diving Tours are some of the best organisers for scuba-diving in Sri Lanka.