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 new insight or understanding did you gain from this video?