Sea urchins are a species of marine animals belonging to the type of echinoderms, a class of sea urchins. They vary in size and shape, but most have a spherical or hemispherical body covered with spines. Sea urchins are widespread throughout the world, from tropical to polar zones, and can be found at various depths, from the coastal zone to the deep ocean floor.
A strange creature with big eyes for children
A prickly ball from the bottom of the ocean
Printable sea urchin coloring book
A marine animal from the bottom of the ocean
It will definitely sting you when you step on it
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A simple picture with a smile and eyes
Realistic printable sea urchin
Realistic Urchin
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Surprised sea urchin as a picture to color
Hedgehog - interesting facts and information
- Body structure: The body of the sea urchin is made up of a hard shell called tests, which is made up of many limestone plates. The sea urchin's spines, which can be short and thick or long and thin, are attached to these plates and can move in all directions.
- Nutrition: Most sea urchins are omnivorous. They feed mainly on detritus, algae and small animals. Some species are known to feed on coral reefs.
- Reproduction: Hedgehogs reproduce through sexual reproduction. Males and females release their gametes (sperm and egg) into the water, where fertilization occurs. The fertilized eggs hatch into larvae, which swim in the water before settling to the bottom and developing into adult sea urchins.
- Ecological role: Hedgehogs play an important role in marine ecosystems. By eating algae, they help control their populations. They are also an important food source for many animal species, including seabirds, crayfish, fish and marine mammals.
- Threats: Some sea urchin species are under threat due to climate change, pollution, overfishing and habitat degradation. Climate change, including warming oceans and acidification of waters, can affect the ability of sea urchins to build and maintain their shells.
- Trivia: Sea urchins have a unique movement system called the ambulacral system, which allows them to move using hundreds of tiny legs called ambulacral legs. Some species of sea urchins are edible and are a prized delicacy in some cultures, particularly in Japan and on the Mediterranean coast.
