The Seahorse’s Unique Relative – Greater Cleveland Aquarium (2024)

Seahorses are one of the most well-known and recognizable creatures in the ocean. Their long snouts and curly tails are clear giveaways of their identities. However, these characteristics are not exclusively associated with seahorses. Located in the waters of southern Australia lives an obscure relative of the seahorse: the seadragon. Seadragons are in the same family as seahorses (Syngnathidae) but they are different in a number of ways. Seahorses are quite common and are found in tropical and subtropical waters all around the world, while seadragons are exclusively found near Australia. Also, there are many species of seahorses (around 47) and only three species of seadragons.

The Seahorse’s Unique Relative – Greater Cleveland Aquarium (1)

Aside from taxonomic classifications and geographic distributions, the main differences between seahorses and seadragons are physical. Seahorses are known for having a prehensile tail, which means they can use their tail to grasp onto things such as plants or even each other. Since seahorses are not good swimmers, the prehensile tail allows them to anchor themselves so they do not get swept away by currents and can remain hidden from predators. Seadragons lack this prehensile tail and rely on camouflage to avoid predation. They have leaf-like appendages to resemble the underwater plants around them, allowing them to blend into their surroundings. In addition, seadragons have slightly longer snouts than their seahorse relatives.

Another one of the main differences between seahorses and seadragons is the way they carry their young. Both seahorse and seadragon young are carried by the males, but in different ways. Seahorse males have a fully enclosed pouch into which females deposit eggs; the males carry those eggs until the young hatch. Seadragon males have a spongy patch located underneath their tail where they carry the eggs.

Besides these main differences, seahorses and seadragons are actually quite similar. At the Greater Cleveland Aquarium, we have one seahorse and one seadragon species. The next time you visit, keep an eye out for the potbelly seahorse (Hippocampus abdominalis) and the weedy seadragon (Phyllopteryx taeniolatus) and see if you can notice their differences!

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Want to know more?

• Kelly, Jasey. “The Differences between the Sea Dragon & Seahorse.”

• MarineBio. “Leafy Sea Dragons, Phycodurus eques.”

• Ocean Conservancy. “Wildlife Fact Sheets: Seahorse.”

– Charlotte

The Seahorse’s Unique Relative – Greater Cleveland Aquarium (2024)

FAQs

What is unique about the seahorse? ›

They are unique in appearance, with their horselike head, prehensile tail, independently moving eyes, and brood pouch. They have long, tubular snouts and small, toothless mouths. Their bodies are covered with consecutive rings of bony plates.

What are the relatives of seahorses? ›

You are similar to the members of your family, but also different. Seahorse cousins and relatives include: Pipefish, Pipehorses, and Seadragons!

What are the seahorse's natural enemies and how do they protect themselves from them? ›

Given the lined seahorse is not a fast-moving or strong-swimming species, it relies on camouflage as a primary foraging strategy. Seahorse predators can include crabs, sharks, skates, and rays, and larger fish. Unlike most other species in the animal kingdom, seahorse males carry and deliver offspring.

What is the most unique feature of the male seahorse? ›

Their truly remarkable biological claim to fame, however, is that male seahorses and sea dragons get pregnant and bear young—a unique adaptation in the animal kingdom.

Why is a seahorse special? ›

Seahorses are the only fish species that can hold your hand! Unlike most fish that use their tails for swimming, seahorses, such as this longsnout seahorse (Hippocampus reidi ), use their monkey-like tails to hold onto objects in their environment, like corals or seagrass.

What is the closest relative to the seahorse? ›

The pipefishes and ghost pipefishes are among the closest relatives to seahorses and seadragons. Similar to those groups, these fishes have elongated snouts for capturing small prey and are extremely well-camouflaged.

What does the seahorse symbolize? ›

Seahorse: Symbol of Good Luck

This is often interpreted as a spiritual reminder to remain grounded and steady, even when the world around us feels like a turbulent ocean. Their unique appearance, much like a tiny underwater dragon, has also associated them with the realm of magic and fantasy.

What is unique about the seahorse tail? ›

So the seahorse has a unique muscular tail that is prehensile, meaning it can grip objects the way your hand does. Seahorses often wrap their tails around sea grass stems, coral heads, sponges, mangroves, or any other suitable objects when they need to anchor themselves.

What do seahorses do for humans? ›

Seahorses, a syngnathidae fish, are one of the important candidate organisms which have been used in Chinese traditional medicine from time immemorial. It is believed that seahorses have the potential to cure infertility, baldness, asthma and arthritis.

How long will a seahorse live? ›

In captivity, lifespans for seahorse species range from about one year in the smallest species to three to five years in the larger species.

What are seahorse babies called? ›

A baby seahorse is called a “fry.” When the time is right for the babies to be born, the males will bend their bodies back and forth until a tiny seahorse pops out of the pouch.

Are seahorses smart? ›

In short, Diane, seahorses learn readily, retain what they have learned, and are relatively intelligent animals for their size. Their complex behaviors make them fascinating to observe. You might even say they are the brainiacs among aquarium fish.

Do seahorses mate for life? ›

Most seahorses are monogamous and mate for life, although a few species are polygamous and change mates from one breeding cycle to the next. However, all species of seahorse mate with only one individual per breeding cycle. Seahorses can often be seen swimming in pairs with their tails linked together.

What is the special ability of seahorse? ›

Special structures in their skin cells, called chromatophores, give seahorses the ability to change color. Seahorses use camouflage, the ability to blend into their surroundings, when they are escaping from predators and when they are sneaking up on prey of their own.

How is a seahorse very different to other fish? ›

Seahorses are unique among fish for having bent necks and long-snouted heads that make them resemble horses. The overall shape of their body, including the lack of a tail fin, helps make them "one of the slowest swimmers on the planet," said Brad Gemmell, a marine biologist at the University of Texas at Austin.

What is unique about a seahorses life cycle? ›

The seahorse life cycle starts when male seahorses court a female with their dance, and when eggs are laid into a special pouch on the male's belly. In the pouch, the eggs are protected and nourished until they hatch into tiny seahorse babies, called fry.

What is unique about seahorses eyes? ›

Eyesight. Seahorses have excellent eyesight and their eyes are able to work independently on either side of their head. This means they can look forwards and backwards at the same time! This is particularly useful as they hunt for food by sight.

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