Whistling Sands has to be one of the most noteworthy beaches on Llyn as the sand here does actually "squeek" under your feet! This is due to the shape of the sand particles and only one other beach in Europe has this same quality. You notice the "squeek" best on the dry sand just above the high tide mark.
There is a small cafe/shop on the top of the beach and the National Trust car park is located up a steep little hill. Dogs are not allowed on the beach in the summer months. This beach is popular with surfers if conditions are right and there are plenty of good walks along the coastal path and into the surrounding countryside from here.