Find us on Facebook
Welcome to Australia's fastest growing Nudibranch identification, tracking and photography website. The NudiBase continually grows and evolves through your help and contributions, making it a truly organic and referential resource dedicated to Nudibranchs.

As you can see from the above link, we are now on Facebook! Please visit us and join our group, and support these little creatures. We will be broadcasting Nudi Hunts, events, promotions and competitions through both the NudiBase and Facebook, and will be developing a newsletter and email notification service very shortly.

Want to contribute?

We are currently developing a self-submission service for all you budding photographers and Nudibranch lovers, however, until this is launched, if you have a sighting and would like to contribute, please email us at

Introducing the HeatBar!

You may notice that there is a new element to the NudiBase! We are proud to introduce the HeatBar, a graphical indicator to the sighting activity of a species around the world.

NudiBase - HeatBar

Each of the bars represents 1 month, up to a maximum of 12 months. A full bar indicates recorded sightings in the past month! An empty bar indicates that no sightings have occurred in the past 12 months. So get hunting!

Nudibranch identification assisted by Dr. Richard Willan and Gary Cobb - thank you for your continuing help.

Top Nudi Sightings
Filter by Location:
Filter by Species:
Filter by Colour: