The Wooramel Seagrass Bank in Shark Bay is the worlds largest sea grass bed. It is 1030 sq km in area and has taken 5000 years to develop.
The Stromatilite community in Hamelin Pool, Shark Bay is the most abundant and diverse microbial ecosystem in the world. The Stromatilites (pictured below right) are microscopic organisms or 'cyanobacteria' that concentrate and recycle nutrients which combine with sedimentary grains to form towers of rock-like materials. These 'living fossils' are 2000- 3000 million years old.