There are 40 known seahorse species, which vary in size and appearance. The tiniest is Denise’s pygmy seahorse , which is about the size of a nickel (0.8 inch, or 2 centimeters, long).

When I envision a seahorse, I immediately think of a gorgeous sea creature that moves gracefully through the depths of the ocean waters. Beautiful, right? Yeah, well, The Masked Singer has totally ...

With an equine head and a prehensile tail, the sea horse seems as odd as it is adorable -- but these strange little creatures are tougher than they look. Sea horse's square tail could inspire ...