I've been on a quest for a while now to get some decent shots of pygmy seahorses (an opportunity that I am fortunate to have regularly). I started with the Olympus 12-50 lens on "macro" setting, then tried the Olympus wet lens on top of that, and now have finally acquired a proper macro lens and Subsee +5 and +10 diopters. I can't believe I didn't just start with the right combination straight away! I think that I am finally starting to get the hang of this setup.
Although lighting the little buggers can be a challenge, and I have yet to convince one to look straight at the camera for its portrait, I am happy with these shots. These are pretty much straight out of the camera, with a touch of exposure and contrast correction, but no crop.
Shot with the Olympus E-M5, 60mm macro lens, Subsee +5, and Inon S-2000 strobes.