Snorkel Adventure Sea Tour to Koh Rok and Koh Haa from Koh Lanta

Koh Rok and Koh Haa sit south and west of Koh Lanta inside the Mu Ko Lanta National Park, and this 7.5-hour boat trip covers both in a single day — the twin islands of Rok Nai and Rok Nok for beach time and reef snorkelling, and the sheltered Koh Haa lagoon for clearer visibility over coral heads. Meeting point is Saladan Pier at 07:50 with hotel transfers included.

The route usually runs Koh Haa first, where the inner lagoon holds some of the best snorkelling in the southern Andaman — walls of soft coral, schools of fusiliers, and on calmer days you can see down 15 metres. From there the boat moves to Koh Rok for a Thai buffet lunch on the beach at Koh Rok Nai and a second snorkel session in the shallow channel between the two islands, where the reef comes right up to the sand. Mask, fins, life jacket, and a professional English-speaking guide are provided, plus drinking water and fresh fruit on board. Turtles, reef sharks, and the occasional barracuda turn up on calmer days.

Budget the 400 THB adult / 200 THB child national park fee on top of the ticket, payable at the pier. Sea conditions here can shift — the trip runs mostly in high season (November to April) and can cancel in rough weather from May onwards. Reef-safe sunscreen is mandatory under national park rules. Beginners and confident snorkellers are both catered for, and the buffet-on-the-beach setup gives enough downtime that non-swimmers won’t feel stuck on a boat all day. Bring a rash vest for sun protection over long stints in the water, and a dry bag for phones and wallets.