Exploring the Enigmatic World of Jellyfish: Nature's Extraterrestrial Wonders

The video explores the fascinating world of jellyfish, ancient creatures that have existed for over 600 million years. Despite their simple anatomy, lacking a brain and heart, jellyfish have survived five mass extinctions. They are found in every ocean, displaying a variety of colors and some possessing bioluminescent abilities. Jellyfish feed on small marine life and have stinging cells that can affect humans. Notable species include the lion's mane jellyfish, which can grow larger than a blue whale, and the immortal jellyfish, capable of reverting to its juvenile form, essentially living forever.

What percentage of Earth's surface is covered by oceans?

• 70%

• 60%

• 50%

• 80%

Which of the following is NOT a characteristic of jellyfish?

• They have a backbone.

• They lack a brain.

• They are mostly water.

• They can detect light.

How do jellyfish primarily defend themselves?

• By hiding in coral reefs.

• By using stinging cells.

• By swimming away quickly.

• By camouflaging with the ocean floor.

Which jellyfish species is known for its ability to clone itself?

• Immortal jellyfish

• Box jellyfish

• Moon jellyfish

• Lion's mane jellyfish

Approximately how many people are stung by jellyfish each year?

• 150 million

• 50 million

• 100 million

• 200 million