Thursday, September 20, 2018

Virtual Australia: Mitchell River Waterfalls WA and Shark Bay


Today's Virtual Adventure takes us to the Kimberly Region of Western.

Specifically Mitchell River National Park and its river and falls.

Winding serpent-like through 445 square  acres, the river and park are habitat to over 50 species of mammals, 220 different birds and 86 unique amphibians and reptiles.

This gives the park biological significance in Australia.

Established in 2000...there are still 3 tribes of aboriginal people living within its vast area.

Helicopter Tour of the Park and Falls

https://youtu.be/-7cbP3NZIT0

https://youtu.be/-zMngUAEUIE

and

Shark Bay


Shark Bay was deemed a World Heritage Site in 1991.  It encompasses
5,438,550 square acres of which 3,200,000 is covered in water with an average depth of 30 feet. There are three Marine Biologist Parks located here. Many peninsulas and islands and nearly 190 miles of limestone cliffs overlooking the bay.


Additionally stromatolites can be seen in Hamelin Bay.

These are considered the oldest living fossils in the world. Hamelin Bay is only one of three sites in the world where these still exist. 

They are formed of layer upon layer of rock formed by cyanobacteria some dating back over 3.7 billion years ago.

The type of bacteria which still causes the stromatolites growth in Shark Bay is called Chlorophyll f.  looking like this


It uses water, sunlight (from the red end of the spectrum) and carbon dioxide to provide its own food source.

These stromatolites grow at a maximum of 0.3 mm a year...and some of the larger ones are over a meter tall.


Hamelin Bay Museum also has one of the ONLY living stromatolites (in an aquarium) in the world and has recorded its growth through the years.

Stromatolites

https://youtu.be/mgmFCDRtAkY

Diving among the stomatolites

https://youtu.be/uzwvjOSS2Pc

What Are Stromatolites

https://youtu.be/N-G7IJCkyvg

Shark Bay

https://youtu.be/mzMz0dBuoOI



More anon...next week Willie Creek Pearl Farm