The island is not endowed with beautiful stretches of sand, but Keeri Beach has good swimming, though no shade. Expect some trash. It’s fringed by a small Palmyra palm forest that’s home to monkeys; it’s located 5km west of Mannar Town.
Heading northwest from Mannar Town you pass a cluster of baobab trees after about 3km. Around the 8km marker is Our Lady of the Martyrs, a church and huge meditation hall where many hundreds gather to pray and meditate (Thursdays, 4pm to 7pm).
Continuing west you pass a vast lagoon and the small town of Pesalai before approaching the port of Talaimannar, 38km from Mannar Town.