(A pair of Much-Desired Flabellinas mating.)

We spent most of January in Indonesia and as part of the trip we spent 11 days on the fabulous Paradise Dancer live-aboard dive boat diving in the most bio-diverse waters in the world. The reefs were really healthy and there was an overwhelming abundance of life under the waves. I can strongly recommend the Aggressor and Dancer live-aboard boats!

In this post I want to show you the creatures that I like seeing the most – nudibranchs (sea slugs) and flatworms. I photographed an incredible 61 separate species on 36 dives – a record that's going to be hard to beat! Here are my favorite 20 from more than 2000 shots.

Click each image for a 1024×768 version. Let me know if you'd like a full-size copy of any for a desktop background. Enjoy!

Left to right below: Thysanozoon nigropapillosum (Yellowspot Flatworm) and Acanthozoon sp. (Papillate Flatworm).


Left to right below: Long-Cirri Phyllodesmium and Black-Margined Glossodoris.


Left to right below: Tyron's Resbecia mating and Serena's Notodoris.


Left to right below: Giant Hypselodoris and Willan's Chromodoris.


Left to right below: Elegant Phyllidia and Giant Hypselodoris just about to mate.


Left to right below: Serpent Pteraeolidia and Thysanozoon nigropapillosum (Yellowspot Flatworm) free-swimming on a night dive.


Left to right below: Dusky Nembrotha and Pseudobiceros bedfordi (Elegant Flatworm).


Left to right below: Anne's Chromodoris and Loch's Chromodoris.


Left to right below: Celestial Phyllidia mating and Purple-Edged Ceratosoma.


Below: Scalloped Ceratosoma.