It is mainly sand, but has patches of shingle. There are also the peaty remains of a prehistoric forest.

Fish include eels, bass, garfish, mullet, turbot, dogfish, whiting, rays, plaice.

There are also sewin (sea trout), mainly towards the estuary, which may be fished for with a licence.

For North Beach, from Bryn Awel Square, Tywyn, near the railway station, take the Sandilands road heading north, bearing right just before the level crossing. The beach starts just past the caravan park and runs northwards. There is plenty of roadside parking.

Tywyn also has fishing from the Estuary and South Beach.