![Image of [Pseudocerotidae] sp. 1](https://content.eol.org/data/media/99/2c/d5/84.CalPhotos_4444_4444_0513_1419.130x130.jpg)
The website www.nudibranch.org has great photos of marine flatworms (and, ofcourse, nudibranchs) organized by geography. Some information about the range, depth, and water temperature where the organisms are found is also included.
The Marine Species Identification Portal has a great description of the Pseudocerotidae, a list of the included genera, and other useful information on these flatworms.
