Phi Phi Islands

The first thing you notice is the water — not blue, but a spectrum of turquoise and jade that shifts with the sun, so clear you can see the coral formations ten metres below the surface. The limestone cliffs rise straight from the sea, sheer and pale grey, their surfaces pocked with caves and draped in vines that somehow find purchase in the rock. This is Phi Phi, a cluster of six islands in the Andaman Sea, roughly forty-five kilometres from the coast of Phuket.

The two main islands — Phi Phi Don and Phi Phi Leh — sit close enough that you can see one from the other, but their characters differ completely. Phi Phi Don is the only inhabited island, a thin strip of land with villages on either side of a narrow isthmus. Walk across it in five minutes and you move from one bay to the next, the Andaman on both sides. The island supports around two thousand permanent residents, most of them working in tourism, fishing, or both.

Phi Phi Leh, the smaller southern island, remains uninhabited and protected. Its most famous feature is Maya Bay, a horseshoe-shaped inlet enclosed by cliffs that reach nearly a hundred metres high. The bay became internationally known after appearing in a film in the year two thousand, and the surge of visitors that followed — sometimes five thousand people a day — damaged the coral so severely that Thai authorities closed the bay entirely in two thousand eighteen. It reopened in early two thousand 2002 with strict limits: no boats inside the bay itself, swimmers only, and a maximum of three hundred visitors per hour.

The geology here is karst limestone, the same formation that shapes much of southern Thailand and neighbouring countries. Rainwater, slightly acidic, dissolves the calcium carbonate over millions of years, carving out caves, sinkholes, and the dramatic overhangs you see along the cliffs. Many of the caves at sea level were once dry, formed when ocean levels were lower during the last ice age. Now they flood with the tide, and long-tail boats navigate into them at low water.

The islands have been known to seafarers for centuries. The name Phi Phi likely derives from Malay, referring to the mangrove trees that once covered parts of the coastline. Chinese and Malay traders used the islands as waypoints, sheltering in the bays during monsoon season. By the mid-twentieth century, a small Muslim fishing community had settled on Phi Phi Don, building wooden houses on stilts over the tidal flats.

Tourism arrived in the nineteen-eighties, slowly at first, then rapidly after the film. The tsunami of December two thousand four struck Phi Phi Don with devastating force. The wave, nearly ten metres high, swept across the low isthmus, destroying most of the buildings and killing more than four thousand people across the region, many of them on this island. The community rebuilt, but the new structures sit on higher ground where possible, and warning systems now monitor seismic activity across the Andaman.

The marine life here remains extraordinary despite the pressures of visitation. The reefs around the islands host blacktip reef sharks, which you will often see in the shallows near the beaches, hunting small fish in water barely deep enough to cover their dorsal fins. Leopard sharks rest on the sandy bottom. Sea turtles — green and hawksbill — nest on some of the quieter beaches, and if you snorkel early in the morning, you may see them grazing on seagrass beds.

Monkeys inhabit the cliffs and beaches, long-tailed macaques that have grown bold around humans. They will take food directly from bags if you leave them unattended, and they have learned to unzip pockets. The local advice is simple: keep your belongings secured and do not feed them. The macaques are wild animals, not pets, and feeding disrupts their natural foraging.

The light changes throughout the day in ways that photographers know well. Early morning brings a soft, diffuse glow, the cliffs still in shadow and the water calm. By midday, the sun overhead flattens the colour, but late afternoon restores depth — the limestone turns gold, the water darkens to emerald, and the shadows stretch long across the bays. Sunset happens fast this close to the equator, the sky shifting from orange to violet in less than twenty minutes.

Visitors arriving by boat — most come this way, either from Phuket or Krabi — will land at Tonsai Bay on Phi Phi Don, where the main village clusters around the pier. The streets are narrow, no cars, just foot traffic and the occasional motorbike. Restaurants and guesthouses line the alleys, and the smell of grilled fish and lemongrass drifts from the kitchens. The village feels dense and lively, especially in the evening when the boats have left and the island belongs to the people staying overnight.

Standing on the viewpoint above Tonsai — a steep fifteen-minute climb up wooden steps — you see the whole geography at once: the twin bays, the narrow land between them, the forested hills, and beyond, the open Andaman stretching toward the horizon. The view makes the fragility of the place clear. This is a small, beautiful, heavily visited corner of the world, and its future depends on how carefully it is managed. The water is still impossibly clear, the cliffs still rise like monuments, and the quiet, if you find it early or late, still feels complete.