I WONDER - Are Jellyfish Actually Fish? Me Pregunto - Las Medusas Son Realmente Peces?

The video explains that jellyfish are not fish because they are invertebrates, lacking a backbone. In contrast, fish are vertebrates with a skeletal system and swim bladder that aid in swimming and buoyancy. Jellyfish move by contracting a muscular ring, propelling themselves through water currents.

Why are jellyfish not considered fish?

• They lack a swim bladder.

• They are invertebrates.

• They are vertebrates.

• They have a backbone.

What feature helps fish stay afloat while they sleep?

• Backbone

• Swim bladder

• Muscular ring

• Fins

What is a key characteristic of jellyfish?

• They have a backbone.

• They are vertebrates.

• They are invertebrates.

• They have a swim bladder.

How do jellyfish move in the water?

• By floating only

• By using a swim bladder

• By contracting a muscular ring

• By using fins

What action propels jellyfish forward?

• Floating with the current

• Pushing water behind them

• Using a swim bladder

• Using their fins