Secret beach

I know it isn't peak tourist season yet but the Silvermine Bay beach is beginning to fill up already. So we decided to take a walk to the quiet "secret" beach along the road to Man Kok Tsui.

It takes a bit of walking to get there but it is so worth it. Even when the main beach is crowded, there are hardly more than two or three couples here.

I wanted to live in this building – until Buffalo Wilbur pointed out that it probably used to be a pig sty.

The beach is surprisingly clean, considering there are no armies of cleaners sweeping it every morning.

Can anyone tell me what fruit this is and whether it's edible?