Many seahorses are as small as a half-inch in length. The largest seahorses can grow to just over a foot in length.
They get their name for their resemblance to horses. Although they're fish, they don't have scales. Instead, they have thin skin that's stretched over bony plates arranged in rings throughout their bodies.
Seahorses are quite unique creatures. Unlike most other types of fish, they swim upright and they do so very slowly. For example, the dwarf seahorse is considered the world's slowest moving fish, traveling just five feet per hour! Much of the time, you can find seahorses resting with their tails wrapped around a nearby stationary object.
Seahorses have flexible necks and long snouts that they use to suck up food. They search for food constantly and can eat up to 3,000 brine shrimp in a single day!
One of the most interesting things about seahorses is that it is the male who carries seahorse eggs until they hatch. This makes seahorses one of the few animal species on Earth in which the male bears the unborn young.
During the mating process, male and female seahorses often hold tails and engage in a courtship dance. However, contrary to popular belief, seahorses do not usually mate for life.
Scientists worry that many seahorse populations are becoming endangered due to the fact that many of their habitats, such as coral reefs, are disappearing. Overfishing may also be a factor. Scientists estimate as many as 20 million seahorses may be caught and sold each year for use in Chinese herbal medicines.