This is Claire Bryant's Dive Master Project but is a great 3D model of Portsea Hole.  Claire is a marine biologist who dived the hole on a regular basis and knows it well.  Portsea is at its best after you descend the 10 meter wall mark and see the "garden" at 18 metres. Here you will find an amazing colorful range of sponges, ascidians and much more. You will also encounter many schools of fish swimming through the long purple ascidians.  It is a slack water dive often used as a training dive because of its great diversity of marine species, abundance of life and different levels to dive - from 10 metres to just over 30metres.