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).

The seahorse relies heavily on its tail for survival in the ocean. Have you ever seen a monkey hold onto a tree branch with its tail? The seahorse uses its tail in a very similar way. Seahorses are ...

Researchers have discovered a tiny new species of pygmy seahorse that inhabits the boulder-strewn coasts of Japan. 1:54 Scientists have discovered that the tiny “Japan pig” is a distinct ...