Beaumaris Bay is world renowned for being one of Australia’s most important and prolific fossil sites. During the Late Miocene (5-6 Million years ago) this area was part of a much larger Bay which stretched further inland and was more open to the ocean. Over the millennia sediments built up containing an amazing fossil record. The uplift of the former seabed and the erosion of the sediments at Beaumaris continues to reveal a wide array of life during a relatively recent geological period of climate change.
The Beaumaris site reveals the fossil remains of both land and sea based fauna and flora. The bird life was dominated by the giant Pelagornis with its 6-7 metre wingspan and beak with teeth like edges. There were also giant penguins. The oldest known fossil of an Albatross was also found on this section of coast. Diprotodon, the 500 KG wombat like marsupial, giant kangaroos and the marsupial Lion were all frequent visitors here, as well as seals and sea lions. Sharks were prevalent. Megalodon was a top line predator growing up to 15 metres long. Its teeth were the size of the palm of your hand and it is likely to have fed on a wide variety of sea life from fish to small whales. There were many other sharks including Mako, Tiger, Bronze Whaler and Port Jackson and the newly evolving White Pointer (Great White). Our Bay had whales of all description, many species no longer exist but the variety of size was possibly best depicted by the Pigmy Right Whale at the smaller end and the giant killer of the seas, Livyatan Melvillei the 17 metre Sperm whale who’s mouth contained 40 teeth each about one third of a metre long and weighing in at 3 kilograms. This 40-ton monster is the largest raptorial animal to have ever lived on Earth at any time. It is more than twice the weight of a Tyrannosaurus Rex which lived 60 million years before this.
There are fossil records of seals and turtles. In fact, the only turtle records that exist in Australia covering the past 66 million years, come from finds at Beaumaris and these are still being unearthed.
The strata along this coast line are also filled with corals and shells from the warmer waters which existed at that time. The prolific life which lived in our seas and on the land is represented by many spectacular finds in Beaumaris Bay. New species to Australia and to science are constantly being made around the Beaumaris Motor Yacht Squadron site.