17 Interesting Facts about Seahorses

Seahorses are one of our many favorite critters to spot while on a dive, and its always amazing seeing different species and colors and sizes. These little dudes are some of the most interesting fish in the seas, as well as very popular with aquarium lovers. So here are…

17 Interesting Facts about Seahorses

Interesting Facts about Seahorses


1. Seahorses are masters of camouflage. Their colors change automatically to blend in to their surroundings. They have pigment sacks in their skin, with 3 main colors, that help them change color based on their surroundings, mood, or mating attitude. As babies, the seahorse is almost see-through, and then gets it’s color once established on a reef or habitat. Sort of like ghost pipe fish, most will live on the same reef their whole life, blending in perfect.

2. Seahorse eyes work independently. This works well in the wild where they have to hide from predators by holding motionless, holding onto their coral with their tail, and watching for food with one eye and danger with the other.

3. Seahorse are horrible swimmers, and mostly resort to catching passing sediment. To catch the tiny sediment, much like many fish, their jaws swiftly open, creating a vacuum suction at the end of their long snouts, sucking in the food rapidly. Frogfish do the same, where they unhinge their jaw and open it rapidly, causing a vacuum effect, while simultaneously lunging forward. The speed is blinding fast.

4. Even though they are fish, seahorses do not have scales, and instead their skin is hard and rough, with each species having different identifying patterns.


Facts about Seahorses


5. Males carry the babies. The female inserts the eggs into the male’s pouch, during a swirling mating dance that can last hours. The eggs hatch inside the male, then he gives live birth to tiny babies. In the wild the babies are carried away in the currents to drift until they land on their own reef. Most don’t survive, thats why so many are born each time.

6. The male pregnancy allows females to reproduce eggs faster, making sure more babies are born. A single female can be responsible for many thousands of births, but….

7. Seahorses are monogamous. Yep, they mate for life as a couple. It has even been observed that when one dies, their mate does not look for a new mate. Since the female can start producing eggs right away, she sometimes gets impatient with the male who is still pregnant from the last batch!


 Seahorses facts


8. Seahorses surprisingly have few predators, because they are so boney and undesirable. Crabs however, don’t mind. Their main predator, that has put them at risk, is of course humans. Chinese kill about 150 million of them per year, to use in medicines and things they still believe works today, but actually has no medicinal properties or benefit. They are also taken from the wild, over 1 million per year, and dried out and sold along with seashells as souvenires.

9. Another threat to seahorses, is the aquarium trade/hobby. Over 1 million seahorses are taken from the wild each year to be sold to aquarium dealers, and it is estimated that 1 in 1000 survive that process longer than 6 weeks.

10. There are currently 54 known species of seahorse, the smallest being the pygmy seahorse, and the biggest the big-belly seahorse. It is hard to identify species, as each one can change color and even texture and look different that others. More species are still being discovered.


pygmy seahorse


11. Seahorses have no stomach, so must eat constantly because the food moves so fast threw their digestive track.

12. Did you know that the Latin name for seahorse, Hippocampus, means “Horse Caterpillar”?

13. Females are in charge. They are the ones that initiate mating, and in the wild they have a territory of about 100 sq meters, while males only have a territory of about 0.5 sq meters.

14. Although only 1 in 1000 seahorses survive to adulthood, a seahorse can live up to 3 years in the wild.

15. Seahorses are considered one of the slowest critters in the ocean, with an average top swim speed of 5 feet per hour. Although, the babies do drift in currents, so I guess they get some better speeds!


seahorse fact


16. Just like a finger print, or spots on a whale shark, seahorses each have unique traits that can identify an individual. Its the “coral net”, or a small crown on their head, that is different in shape and color for each.

17. Seahorse can be found in most coastal countries, especially in warmer climates around the equator, such as tropical Bali or Maldives. But they are also seen in colder places like in UK. Of course water pollution has cut the numbers way down, in some areas more than others. In places like Bali, many conservationists are trying to study and protect underwater life, while places like China are the worst offenders.


weedy seadragon


If you liked this article, you might also be interested in Interesting Facts about Whale Sharks or Interesting Facts about Dolphins! If you know more cool facts about seahorses, let us know if the comments below!