I WONDER - Do Fish Have Eyelids? Me Pregunto - Tienen Los Peces Párpados?

The video explains that most fish cannot wink or blink due to the absence of eyelids, meaning their eyes remain open even while sleeping. It describes how fish sleep by relaxing and slowing their movements, while their brains stay alert for danger. Sharks, however, have eyelids, but they do not close completely.

Why can't most fish wink or blink?

• They have too many eyes.

• They are always awake.

• They lack eyelids.

• They have very small eyes.

What happens to fish eyes when they sleep?

• They close partially.

• They remain open.

• They change color.

• They become smaller.

How do fish manage to sleep without eyelids?

• They swim faster.

• They relax and slow down their movements.

• They hide in caves.

• They stop breathing.

Why do fish brains remain alert during sleep?

• To communicate with other fish.

• To keep swimming.

• To detect food.

• To sense danger.

What is unique about shark eyelids compared to most fish?

• They are transparent.

• They can close completely.

• They are colorful.

• They exist but don't close completely.