8 animals without brain

Jellyfish: Simple nervous system without a brain, uses nerve nets to detect stimuli, moves and captures prey passively.

Sea Sponge: Lacks a nervous system; filters water through pores for nutrients, relying on cellular coordination to function.

Sea Urchin: Lacks a brain but has a nerve ring; uses spines and tube feet for movement and feeding.

Coral: Brainless, colonial organisms that build reefs, relying on symbiotic algae for energy through photosynthesis.

Sea Star (Starfish): Has a nerve ring instead of a brain; uses tube feet for movement and feeding, regenerates limbs.

Sea Anemone: Lacks a brain, has nerve nets; uses tentacles to capture prey and defend itself with stinging cells.

Flatworms: Simple nervous system without a true brain; relies on nerve cords and ganglia for sensory processing and movement.

Oysters: Brainless mollusks, filter feeders that process water for food; rely on simple nerve cells for basic functions.

This information is not DNA's opinion but obtained from media reports