Subject: The Glossodoris cinta is a widespread nudibranch that comes in different colour variations depending on location. Are they all the same species of nudibranch or are they different species within the same genus? It is very difficult to tell and opinions are divided on this matter.
Technique: When filming macro it is important to get as close as possible to your subject. Make sure that the animal covers a big part of your frame. If you film from too far away a lot of beautiful details will be lost. Macro lenses or diopters are really necessary to achieve nice macro shots.