The health food store? My wife told me about that (from home to my office) and I actually found one in the Children's Hospital about 5 blocks from work.
Went straight home and spent an hour prepping the food and seawater bowls. Phase 1, Day 1 of "Operation Hippocampus" is complete. He's still brething, but it's 50/50 at this point.
Question for the group: In the posts on Seahorse.org, I read that I'm supposed to use mysis, cod liver oil and spirulina (or spirulena).
How much cod liver oil? I found a jar with caplets that dissolve if a human eats them, so I cut off the top of two (3 mm long or so, about half the size of 1 piece of plain chocolate M&Ms) caplets. I used the mortar and pestle but it turned it a thick paste. Is there anything I can use that is good for the seahorse' digestive system that I will make it more watery?