Sessile animals without brains, like sponges, are incapable of feeling pain. Similarly, jellyfish, which also lack brains, do not experience pain. These animals might respond to stimuli or damage, but they don't feel the pain due to the absence of a brain, which is necessary for the sensation of pain.
Animals That Do Not Feel Pain
| Animal | Brain | Pain Sensation |
|---|---|---|
| Sponges | No | No |
| Jellyfish | No | No |
Understanding Pain in Animals
- The ability to feel pain requires a brain.
- Animals without brains may respond to harmful stimuli but do not have a conscious sensation of pain.
- This response is more like a reflex than a feeling.
Why Brains are Important for Feeling Pain
A brain is needed to process sensory input and convert it into the conscious experience of pain. Without a brain, the necessary neural pathways are not present to register pain.
Therefore, based on the provided reference, it is reasonable to conclude that sponges and jellyfish do not experience pain.
