Starfish Facts on its Ancient History

When it comes to researching about starfish facts on their history, it is actually a very difficult process because starfishes are echinoderms and their species hardly leave any trace in their fossils aside from their external ossicles and spines. This makes it extra difficult for the researchers to spot and identify fossils that are strictly from the starfishes.

But according to research findings, starfish fossils can be traced back to Ordovician which is roughly about 450 million years ago. There was also evidence that numerous species of starfishes became extinct as scientists were able to find starfish beds amid fossil layers. Thankfully, starfishes have the ability to quickly diversify their own species. The surviving species were able to evolve rapidly that they were able to morph new species from themselves.

The unique thing about starfishes and their echinoderm ancestors is that the ancient echinoderms were believed to be symmetrical in a bilateral fashion which is unlike the radial symmetry that starfishes evolved to be. But the radial symmetry of the starfishes today does not imply that they have stemmed from the same ancestors as jelly fishes which also have radial symmetrical bodies. Today, there are over 1,500 recorded species of starfishes that are still living.

Hunting Techniques

Starfish facts indicate that these animals have a generalist diet which means that can eat almost anything from clams and snails to dying fishes. But with the speed of these starfishes on the bottom of the ocean, one would definitely wonder how these animals can catch or hunt their prey. Starfishes begin hunting their prey through their keen senses. They can actually detect the presence of a prey’s odor. So when their senses detect prey, the legs begin to act More...

Starfish Facts

Starfish, also popularly recognized equally as sea stars, common name for 5 orders and about 1500 living species of marine invertebrate characterized by radially arranged arms having locomotory tube feet. Actually, starfish cannot be considered as fish in spite of the name provided to these sea animals. Some known starfish facts are that they belong to the group called echinoderms. They can be found in great numbers in the depths of the ocean and as well as in shallow waters. More...

Anatomy of the Starfish Facts

A lot of starfish facts talk about the anatomy of this sea creature. The shape of the common starfish which is what people perceive as a star is already interesting as it is. But if you look into the structure both internal and external parts of the starfish, you will really be fascinated by this animal. Just like humans, the starfish has different skin layers such as the epidermis and the dermis. But they also have an epithelium layer where More...

Body Cooling

All types of living organisms will always have a suitable environment where they can survive. Slight changes in the environment will be acceptable because of an organism’s ability to adapt. But when the environment gets too extreme, the organism’s adaptation mechanisms may not work anymore. Temperature plays a vital role when animals choose their habitat. Starfishes live under the sea but they can be affected by water temperature levels too. Based on starfish facts gathered by researchers, starfishes can start More...

Drying a Starfish

Starfish can be dried by first mixing equal portions baking soda and table salt. Apply a thin layer of this mixture to the inside bottom of a shallow, small cardboard box. Then put that box aside for later use. In a casserole dish, combine one part “for home use” bleach and three parts water together. You will be needing enough of this solution for submerging the starfish completely. Place the starfish in your bleach solution then let it soak for More...

Feeding a Red Starfish

When considering feeding a red starfish, you need to observe the animal to see what it is and it is not eating. A red starfish could be feeding on bacteria out of your aquarium glass, but steering away from other foods that you provide for other inhabitants in your tank. As an omnivore, the starfish must be given nutrients from the two sources. If frozen, your food will have to be thawed. Use tweezers or forceps for putting a thawed More...

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 More...