Sure enough, one of our guides found one - and another nearby - very near the beach in the sandy area where just a few inches of water covered them. When he said 'Seahorse" I swam over really fast thinking I might miss it. Then I saw this:
The second one was brighter in color, but not any more active or less sad looking.
"Less like a horse and more like Eeyore" my clever husband remarked. Absolutely true. I ended up feeling bad for the poor things. We saw one other seahorse on another day - same level of lethargy and melancholy. I was really glad I saw them, but this is an instance where the reality of wildlife in the wild differed sharply from expectation.