High Five Facts - Jelly Fish

The video presents five fascinating facts about jellyfish. It explains that jellyfish are not fish because they are invertebrates, lacking bones and a skeletal system. They are composed of 98% water and have no brain or heart, relying on a simple nervous system. Jellyfish can sting even after death due to venomous tentacles. They vary greatly in size, from tiny 1mm species to the massive Lion's Mane jellyfish. Some jellyfish exhibit bioluminescence, using light to deter predators. The video concludes with a recap of these intriguing jellyfish facts.

What characteristic distinguishes jellyfish from true fish?

• Jellyfish have a swim bladder.

• Jellyfish have a backbone.

• Jellyfish are vertebrates.

• Jellyfish are invertebrates.

How do jellyfish propel themselves through water?

• By contracting a ring of muscle.

• By using fins.

• By flapping their tentacles.

• By using a swim bladder.

Why don't jellyfish need a heart?

• They have multiple hearts.

• They have a large brain.

• They don't have blood.

• They have a very small heart.

What should you avoid doing if you see a jellyfish washed ashore?

• Observing it from a distance.

• Touching it.

• Taking a photo of it.

• Walking around it.

What is the purpose of bioluminescence in jellyfish?

• To attract prey.

• To communicate with other jellyfish.

• To scare away predators.

• To find mates.