Marros Beach is located on Carmarthen Bay on the south coast of Wales, between Pendine and Amroth beaches.

The western end of the beach is often used by naturists, around a half mile west from the access point. It's a quiet and secluded beach that reduces to pebbles at high tides. It's also home to a petrified forest and shipwreck.

The beach is mostly a storm bank of stones and gravel above Mean High Water with a large mostly sandy beach appearing when the tide is lower. It is relatively unspoilt when compared to the tourist honeypots nearby. At the western end there are cliffs and caves. It never gets busy here, and being remote it has become popular with local naturists and is ideal for nudist walking.