no it does not use spikes to protect itself
Hedgehogs have spines to protect themselves from predators and threats, when threatened they curl into a ball with their spines sticking out.
The pointy things on a cactus are called spines.
its a protection which animal have to protect itself from the predator...
to protect itself from creatures that could harm it.
Porcupines have quills.
A cactus adapts to its environment by losing its spines to reduce water loss and protect itself from animals.
A blowfish protects itself by inflating its body with water or air to appear larger and more difficult to swallow by predators. They can also release a toxin when threatened, which is deadly to some predators and can cause illness in others. Additionally, the sharp spines on their skin can deter predators from attacking.
So that the sea urchin can protect itself from is enemies, it also has venomous spines. They also use their spines to kill other sea ceatures, so they can eat them.
Echidnas are known for their spiky spines which protect them from would-be predators. Echidnas have strong front legs and sharp claws that enable them to dig quickly into the ground to avoid danger. They "flatten out" as they dig, appearing to sink horizontally into the ground, thus ensuring their sharp spines are exposed through the process.
So that the sea urchin can protect itself from is enemies, it also has venomous spines. They also use their spines to kill other sea ceatures, so they can eat them.
they have the spines to protect them from your face
A bubblefish is otherwise known as a puffer fish. It is a small fish covered in external spines that will puff itself up into a sphere to deter predators. The spines are also poisonous.