Sydney Tsunami

The Tsnuami's made me dig a bit to find out how often they happen on the east coast of Australia. The biggest one was apparently 300m high approx 1900 years ago, thats why there are shells in the Blue Mountains 80kms inland, they occur every 3-500 years with the last one approx 375 years ago which was 30-50m. Here is a picture of Curl Curl Beach during a storm.