Seahorses are in the family of fishes, Syngnathidae, which also includes pipefishes, pipehorses, and seadragons. Seahorse tails are unique in that they exhibit prehensility-the ability to grasp. This ability is prominent in seahorses and some pipehorses, but is absent in the rest. The anatomy of the seahorse tail consists of a square cross-section made up of articulating armored plates. The mechanisms behind the prehensility of their tails, however, is yet to be completely understood. Factors like size, shape, composition, and orientation of the skeletal plates (and muscles) contribute to the overall prehensility. In order to quantify and compare these factors, the tails of ten different species of seahorses are scanned with a micro-computed tomography unit, analyzed using geometric morphometrics and measured by a custom computational software. The results obtained could reveal new strategies for the design of engineering technologies, such as flexible armors or prehensile manipulators.