Bennett's Hypseldoris Nudibranch
This Seaslug is only found in south eastern Australia. It is one of a group of Seaslugs that have all developed similar red spots.
It is thought that this mimicry is to help fish learn more quickly not to eat things with red spots. Once a fish has tried one it'll never try another - these Seaslugs contain a distasteful chemical they get from eating sponge for dinner.
FIND OUT MORE ABOUT THE BENNETT'S HYPSELDORIS NUDIBRANCH
A few more facts from the people that know more about the marine life of Sydney than anyone else.
More info from the
Australian Museum