The kids will sleep soundly after frolicking by the seaside at Haad Than Sadet Beach. Search for crabs and other little critters, dip a toe in the water or toss a ball around!
Situated in Ko Pha-ngan, this stretch of coastline is well worth including on your itinerary. But you'll find loads more to see in the area. Haad Rin Nai Beach, Ban Chalok Beach, and Tharn Sadet Waterfall aren't too far from Haad Than Sadet Beach.