Notes Transparent for camouflage.
Common among rocks and under rocky overhangs. Large numbers can often be found in pockets of deep brackish water around estuaries. They can tolerate a wide range of salinity and can be found near freshwater or in rock pools where water has evapourated leaving a very salty mix behind (salinity range 5-43 g salt/L seawater).
Ferocious predators and scavengers.
It is fascinating to watch the food travel through their body cavity.
References A Guide to the Plants and Animals of the New Zealand Marine Studies Centre: McKinnon