Lamorna is the place where the 2013 movie Summer in February was filmed.
The cove has a small pebble beach beside the harbour and quay with lots of large boulders, especially at low tide. The cove is on the South West Coast Path between Porthcurno and Mousehole. A nice quiet spot for swimming and a good spot for scuba diving, though no lifeguard cover provided.
https://www.visitcornwall.com/beaches/west-cornwall/lands-end/lamorna-cove-beach