After Blesi gave me an approximate location of some Hawaiian Seahorses, I went out in search of these rare critters. My first dive was in bad conditions but I did find 3 seahorses. This past friday conditions were much improved, although my aperture was stuck at F10 which produced a lot of slightly blurry shots on the nose, etc... But I did end up getting a few ok shots.
It turns out the Maui Ocean center has been breeding the seahorses and releasing them into the ocean, thus the increase in population! I'm happy about that!
Here is one of a brown Seahorse.
Here is a yellow one. One source says the yellow seahorses are female.