Koh Sak

Koh Sak is the small island immediately north of Koh Larn, close enough to see from the north-end beaches. It shelves gently from a sandy three-metre entry to about eighteen metres over hard and soft coral, which makes it one of the most-used beginner dive and Discover-Scuba sites in Pattaya. There is a small beach to land on, and the sheltered shallows are good for snorkeling on a calm day. It has no village, shops or accommodation — it is a boat-trip stop rather than a destination in its own right.

เกาะสาก · one of Pattaya’s near islands

Gentle shallow coral with reef fish and good macro life; ideal for Discover Scuba and Open Water training, and easy snorkeling in the sheltered shallows.

Marine life

Butterflyfish, angelfish, parrotfish and moray eels, plus macro critters like seahorses and nudibranchs in the sand.

The beach

A small sandy beach on the sheltered side — pleasant for a swim, with minimal facilities.

Best for

Beginner divers, easy snorkeling, and a quieter add-on to Koh Larn.

Most people reach Koh Sak on a half-day snorkel or dive trip from Bali Hai (about 30 minutes), often combined with a Koh Larn beach stop. There is no scheduled passenger ferry, so otherwise it is a speedboat charter.

• Come on a snorkel/dive trip or charter — there is no public ferry
• Calm mornings give the clearest water
• Bring your own mask; facilities are minimal
• Pair it with a Koh Larn beach afternoon

Most of these are reached on a boat trip from Bali Hai Pier. For the diving, see scuba diving; deciding between islands, see Koh Larn vs Ko Samet vs Ko Si Chang.