Tonsai Bay

The south-facing bay where all ferries and speedboats arrive at Tonsai Pier. The beach is narrow and busy with moored longtail boats, so it is used more as the island's harbour and for sunset views of the cliffs than for swimming; Loh Dalum is a one-minute walk across the isthmus. A 20 baht cleaning fee is collected from arriving visitors at the pier.

Tonsai Bay is on Tonsai Bay, the south side of Phi Phi Don where the ferries and longtails come in.

Not that we know of. This page on kohphiphi-live.com shows what Tonsai Bay is and where to find it.