Starfish are amazing creatures, unlike any other from a biological point of view. Inhabitants on the seabed, they are very different from each other in appearance. And by the way, not all of them are harmless …
Despite the fact that starfish live under water, they do not have gills.
Currently, about two thousand species of starfish are known.
Not all starfish have five rays, some have up to fifty.
Marine stars have the ability to regenerate, that is, they can restore lost parts of the body. True, this is a long process – one ray grows about a year.
Instead of blood, the body of the starfish uses water.
Starfish move with the help of many small tubular legs.
Despite the funny look, the starfish are predators, they hunt for mussels, mollusks, snails and small fishes.
At the end of each ray of the starfish, one eye is located.
Despite such a number of eyes, the sight of starfish is very weak, but they can distinguish light from darkness, which helps them navigate.
The largest marine stars can reach a diameter of one meter and weigh at the same time up to five kilograms.
Many kinds of starfish are cannibals.
Among the starfish there are also poisonous ones.
Some types of starfish can change the floor.
Many starfish are able to move along the bottom at an amazing speed.
Starfish live in various depths, up to ten kilometers.
Starfish are long-lived, some species live up to 30-35 years.
Also it is one of the oldest inhabitants of the Earth. Marine stars are about 250 million years old.
Starfish do not know how to swim.
Some marine stars multiply by division in two. After division, the missing parts of the body grow.
The heart of the starfish beats with a frequency of 5-7 beats per minute.
