The word Perhentian is Malay for 'stop' - not as in cease, but as in 'rest before continuing onward'.
BBC: The perfect trip: Singapore and Malaysia
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From the deck of the boat, the two Perhentian islands - Besar and Kecil - appear as a mirage shrouded by clouds.
BBC: The perfect trip: Singapore and Malaysia
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The closeness of the main coral beds to the shores, combined with the water's float-friendly salinity, make the sea around Perhentian Besar and nearby Kecil excellent for snorkelling.