They are born with them for defense purposes.
No.
Sea Urchin !
spikes and they do not have skin they have a Shell
for protection
spikes and they do not have skin they have a Shell
A vampire squid.
Having pointy spikes to protect themselves.
sea foam green and the spikes are blue
the sea urchin has many adaptions like its spikes to protect it self from predators.
No, a sea urchin and a sea anemone are two different sea creatures nothingalike.They do have some alike characteristics.like they both use their long tentacles , or spikes for protection.
Uhh...they're spikes???????????? They might be poisonous to other sea creatures but I'm not sure...
no they have penises to make the predator not eat it