High Five Facts - Jellyfish Choca Esos Cinco - Medusas

The video presents five fascinating facts about jellyfish. It explains that jellyfish are not fish because they are invertebrates, composed mostly of water, and lack a brain or heart. Jellyfish can sting even when dead due to their tentacles. The video also covers the size range of jellyfish, from tiny to the large Lion's Mane jellyfish. Lastly, it discusses bioluminescence, a phenomenon where jellyfish and other marine organisms produce light through chemical reactions.

What distinguishes jellyfish from true fish?

• Jellyfish have a backbone.

• Jellyfish have a swim bladder.

• Jellyfish are vertebrates.

• Jellyfish lack a skeletal system.

What percentage of a jellyfish's body is made up of water?

• 50%

• 75%

• 90%

• 98%

Why don't jellyfish need a heart?

• They don't have blood.

• They have multiple hearts.

• They have a large brain.

• They have a thick skin.

What is a unique feature of jellyfish tentacles?

• They are used for breathing.

• They can sting even after the jellyfish is dead.

• They are used for swimming.

• They can regenerate instantly.

What is bioluminescence?

• Light produced by living organisms.

• A type of jellyfish diet.

• A type of jellyfish movement.

• A jellyfish's defense mechanism.