Haad Khom — Coral Bay
Tucked between the fishing village of Chaloklum and the more remote sweep of Bottle Beach, Haad Khom is one of the north coast's quiet surprises. Locals and longtime visitors know it as Coral Bay, and the name is earned: a reef wraps the mouth of the cove, sheltering the water and keeping it glassy and calm even when the open sea is choppy. The beach itself is short and intimate — a curve of pale sand backed by palms with only a handful of low-key beach bars and bungalow operations behind it.
What sets Haad Khom apart from most beaches on Koh Phangan is that you can slip straight off the sand and be over coral within a few strokes. The inner shallows have seen more foot traffic over the years, so the strongest snorkelling is out toward the buoys, where the reef and fish life are noticeably healthier and more varied. The water is unpolished and the surroundings low-rise — which is exactly why people who find this cove tend to keep coming back.
Access is easier than the other remote north-coast bays: a road from Chaloklum reaches the beach, so there is no need for a longtail commitment just to arrive. After a morning on the reef, Chaloklum village is a few minutes away with cafes, fresh-fish kitchens and the dive boat pier for Sail Rock day trips. The combination of easy in-and-out and genuine snorkelling is hard to match on the island.