Starfish Facts on Physical Characteristics

When you look at a starfish, you can easily be captivated by its appearance. There are thousands of species of starfishes that you can find and only a few of them are those that you see on the shorelines. Most of them are found on the seabed where they can easily catch prey. The seabed is also where you can find species of starfishes with very interesting physical features.

One of the starfish facts about its appearance is that the thick layer of skin that these animals have is the dermis. The dermis layer of starfishes can differ from one species to another especially in terms of structure and texture. But all of these starfishes have a dermis that is abundant with ossicles. These ossicles are made up of calcium carbonate and they are the components of the starfish’s endoskeleton. Some starfishes can have endoskeletons with spines to protect them from predators but some also have dermis layers that are smooth and leathery.

This endoskeleton serves as the armor of the starfish. Because it cannot do much to protect itself, some starfishes can also have numerous spikes not only in the middle of the central disc but also scattered all throughout the arms. Although starfishes have a 5-point symmetry body presentation, this does not mean that a starfish can only have 5 arms.

External Threats

The greatest threat to starfish is similar one which endangers most other seawater animals: human beings. Starfish needs clean and clear water as its habitat. When humans permit water pollutants to flow into the seas and oceans, these species can get extremely unhealthy and even die. In addition, there are several cultures that allow the eating of starfish. In case too many starfishes are brought away from any area, these beautiful seawater creatures will be deprived of the opportunity to More...

Starfish Facts on Reproduction

When it comes to starfish facts on reproduction, things can get a little bit interesting considering the fact that some species can regenerate and grow just from an arm. But the regeneration of one starfish coming from a single arm is under the asexual form of reproduction and only a few species will be able to do that. Regeneration usually requires majority of the central disc to be intact for most of the other species. In terms of sexual reproduction, More...

Starfish Facts on their Diet

Starfishes are among the most fun- looking marine animals that kids really want to pick when they go to the beach. Because of their appearance, people get more interested about these animals. One of the common questions about starfish facts that kids ask is about the food and the diet of starfishes. The diet of these sea creatures is actually quite interesting because of the variety of food that they eat. There are more than one species of starfishes in More...

Starfish Facts on their Senses

Even if starfishes look very peculiar and different from the rest of the animals that you typically see, they still have typical body functions and processes that other animals commonly share. They also have senses such as seeing, touching, and smelling. These senses may be some starfish facts that you may not have heard before. In terms of vision, starfishes actually have vision sensors which are eyespots that are specially located at the far ends of the starfish’s arms. These More...

Spines of Starfish Facts

If you find out about starfish facts, you will know that not all species of starfishes have spines on their backs. But majority of the living species have spines which are major parts of their exterior anatomy. These spines are extensions of the external dermis of the starfish which are composed of calcium carbonate. The spines may also be of different color than the rest of the body. Their tips can be sharp and pointed while others can be curved More...

Feeding a Starfish

Nowadays, marine scientists call starfish “sea stars”, since they are actually not fish, but echinoderms. There are more than two thousand species of sea stars. Most of them have five arms, but others are blessed with up to forty arms. The stomach and mouth of the starfish are located on its bottom. These animals usually push their stomachs from their bodies, wrapping them around the food for digestion. When learning how to feed a starfish, identify what type your starfish More...

Starfish Facts on Asexual Methods of Reproduction

Starfishes are animals that are known to be able to multiply through both the sexual and the asexual processes. Based on starfish facts, not all species of starfishes can asexually create an offspring. There are species that strictly multiply through the sexual methods. But the asexual reproduction of starfishes is definitely a very interesting topic especially to kids. The asexual process of preproduction by starfishes can be accomplished through two methods. These are autotomy and fission. Autotomy is the process More...