Jellyfish

Prince of Darkness

Helmet jellyfish have taken over a Norwegian fjord, demonstrating the species’ tenacity and offering clues about environmental factors that can upend an ecosystem.

Latest in Jellyfish
A brown paper nautilus rides atop a jellyfish in Balayan Bay, Luzon, the Philippines. The nautilus uses its jellyfish host as both a food source, and as a convenient and threatening vehicle.
Convenient Conveyance

For a jellyfish, there are few hitchhikers more harmful than this juvenile brown paper nautilus, and for the nautilus, few rides could be more handy.