Serendib Scuba operates a fleet of four Sri Lankan liveaboards - Ocean Diamond (20 guests, 6 cabins), Emerald (10 guests, 6 cabins), Crystal (6 guests, 4 cabins) and Sapphire (4 guests, 3 cabins) - running wreck and reef diving trips along Sri Lanka's east and west coasts with full-board meals and personalised itineraries. Founded in October 2023 by scuba diving enthusiast Yohan Abeyesekera, Serendib Scuba runs the fleet as partner vessels rather than owning a single ship.