Thoddoo Turtle / Vella Ulhey Than is a long coral wall on the southwest side of Thoddoo with a shallow top and a slope fully covered in hard corals. It is one of the island's easiest turtle sites, with a profile that suits beginner divers and snorkelers while still giving plenty of room for rays and mantas to move through. On quieter days it feels like a relaxed reef wall; in the monsoon months, current can build enough to make timing and buoyancy matter.