Time Out says
Not far from Sai Kung, the 2.5km-long Sharp Island is known for being strewn with rocks that are endearingly shaped like pineapple buns – you won’t find these tasty-looking rocks anywhere else in the territory.
The principle attractions of Sharp Island are its two distinct beaches – Hap Mun Bay and Kiu Tsui Beach. You can take a boat to the beach of your choice from Sai Kung. There is a path over the island, but it is overgrown; we recommend using a map if you try to locate it! (See bit.ly/SharpIslandTrail).
Hap Mun Bay is a popular and clean government-managed beach. Kiu Tsui beach isn’t as good, but when the tide is low, you’ll discover a tombolo connecting the beach itself to the nearby island of Kiu Tau. Take a walk over the tombolo as the sea recedes and you’ll feel like a veritable Moses. Just make sure you come back before the tide comes in.
One thing not to miss:
Walking (kind of) through the ocean over the tombolo, on to Kiu Tau.
How to get there:
Boats leaves for Sharp Island from Sai Kung Public Ferry Pier every 30 minutes until 5.30pm. The 15-minute ride costs around $30 return (subject to demand). Check tidal information before your trip at weather.gov.hk, and find out more about Sharp Island at bit.ly/SharpIsland.