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.

What new insight or understanding did you gain from this video?