Su'a Ocean Trenches
Amanda's brother Tris, his girlfriend Emily and her sister Rose visited Samoa earlier this month and went for a swim at Su'a Ocean Trenches on the South Coast.
These deep holes are connected to the ocean through tunnels in the volcanic rock. On a calm day its possible to swim through a 5 metre underwater tunnel out to sea. It was too rough the day we were there so thrillseekers had to content themselves with negotiating the steep ladder...
… and letting the current surging through the tunnel swoosh them back and forth across the pool.