Explore the Underwater World aquarium

Swim at Tanjung Rhu — a quieter, more scenic beach on the north coast

Snorkel or dive at Pulau Payar Marine Park (day trip, RM 200–300 / $45–67)

Pregnant Maiden Lake, Dayang Bunting Marble Geoforest Park, Beras Basah Island (RM 35–50 / $8–11)

Sunset at Pantai Cenang beach with a cheap duty-free beer