http://www.pulauhantu.org/51/ --- "Finally, everyone's favourite and a gem in Hantu's reef - Tigertail seahorses can be spotted on a regular basis. Similar to slugs, they move slowly (infact, seahorses are the slowest fishes in the sea!) and are easily photographed. Because of that, they are also easily collected for the aquarium trade. Like Black coral, all species of seahorses are prohibited from trade because their use in traditional medicines has severely threatened their survival."
Species might be Hippocampus comes from http://www.seahorse.org/library/articles/quickid.shtml