i believe it is called pontius bergina...found in the lower regions of walmart...it has some great charateristics, like glows in the dark making a moonlight for the timid seahorses....but before careful when handling as it is toxic
haha....just a fake plant...with such tiny seahorses you have to be EXTREMELY careful with what you put in the tank as they can be killed by things like crabs and snails and little hydroids or aipstasia