Sea urchins may be considered "ugly" due to their spiny, rugged exterior and irregular shapes, which are quite different from more traditionally appealing marine life. Their appearance serves an important purpose, as the spines provide protection from predators and help with camouflage in their rocky habitats. Additionally, beauty is subjective; their unique forms and vibrant colors can also be appreciated in the context of marine biodiversity. Ultimately, their appearance is a result of evolutionary adaptations to survive in their environment.
A sea urchin is a half-sphere. The top of the urchin is rounded like a globe but the bottom is flattish to fit on the bottom of the sea so it can walk around.
The classification of a Sea Urchin is Echinoidea
sea urchin
Answer It [a sea urchin's sting] IS poisonous. If a sea urchin stings you, you might have [or do] the following: 1) Muscle spasms. 2) Difficulties in breathing. 3) Death 4) Faint So, you better watch out for sea urchins.
A sea urchin does move, but not very frequently.
because the crab needs the sea urchin for protection and the sea urchin needs the crab for food
Ummm...it's the thing from which a sea urchin hatches?
Yes, sea urchin can be frozen, but it is best to do so quickly to preserve its texture and flavor. When freezing, it's important to clean and prepare the sea urchin properly, ideally by removing the roe and packaging it in airtight containers or vacuum-sealed bags. However, freezing may affect its taste and texture, so fresh sea urchin is generally preferred for culinary use.
I think a sea anenome and a sea urchin can live together because i have a little aquarium and there is a sea urchin and and a sea anenome (if that's how you spell it) living in there and they were perfectly fine. BUT if you have a sea urchin do not have any crabs in there, because my sea urchin killed one, and almost killed another one by taking its claw off. :(
The question is so simple that I wanted to say it. Well maybe it is not that simple for some other people. So the answer is : A sea urchin is an invertebrate because it has a backbone, or the vertebral column......
Spines of the sea urchin can cause injuries of the skin.
It urges the sea to adapt to IT! The litle urchin urger.