Jo Waterson
Google
It's worth a visit to this beach. When I went it was quiet and peaceful with about 7 people on the beach in total. There are five ferries a day from Shirahama Port (at the end of road 215 on Iriomote, the only main road!).
The current timetable is attached but you can check the times by plotting the route on Google maps (we found that easier than trying to find a schedule in English online). We drove to the ferry port but there were buses as well. Once you arrive at Funauki port it's a short walk to the beach which is signposted.
The beach was beautiful, even on a slightly cloudy day like we had. The snorkelling was pretty good too - it stays quite shallow a long way out and we found the best snorkelling was a little further from the beach. We never went out of depth though. A lot of dead coral but we found a lot of living corals too and lots of fish.