Seahorses were one of our interesting items. The male carries the young! We kept a tank of those at times and would invite friends over to watch the birthing process. I remember a few times where we had chairs around the tank and anxiously awaited the big event. I only remember once ever getting to actually see it.
I was very young and it was a long time ago!
Here’s a link to a Wikipedia Article about Seahorses http://en.wikipedia.org/wiki/Seahorse