Jellyfish, The new Rulers of the Ocean (2026)

Jellyfish swarms are grabbing global attention—and not in a good way. These invasions are wreaking havoc on tourism, fisheries, and even human health. But how do creatures that are more than 98% water, with no bones, no shells, and no brains, manage to multiply so explosively? While massive jellyfish blooms are a natural part of their lifecycle, there's no denying that they've become far more frequent and enormous in recent decades. We're now seeing jellyfish take over regions where fish once thrived—like the waters off Namibia, the Black Sea, the Sea of Japan, and parts of the Baltic Sea. What's driving this shift? Why have we overlooked the crucial role jellyfish play in marine ecosystems, despite the fact that they've survived longer than dinosaurs? Could jellyfish be on the verge of reclaiming the oceans as their domain? And what if they end up being the last species standing?