Not really a lot, but everything made for underwater use, which means bigger, heavier and more expensive. It's better to have always some backup, because it's very easy to flood something and salt water makes a lot of damages very quickly.
Yes, this is my favorite Pygmy Seahorse. The average size of body and head is about 6 mm (0'0-8/32"). Consider also that underwater, with the natural light, you don't see its colors and it has the same color of the guest soft coral on which it lives. So it's very difficult to spot and it was found, for the first time, only few years ago, by chance as always happens with these small critters. In the last seven months five new species of Pygmy Seahorse have been officially named (this was the last one). I wonder how many species are still waiting to be discovered!
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