
As I read about how killer jellyfish are spreading over the oceans and crowding out other forms of marine life, I feel (not for the first time) as if I were a minor character in a bad science-fiction disaster story.
But killer jellyfish are no joke. Jeffyfish can survive where other species do, many have deadly stings and they prevent the other species from coming back once they establish their dominance.

What’s behind the plague of jellyfish. Click to enlarge. Source: Quartz.com
Click on the following links for more.
Jellyfish are taking over the seas and it may be too late to stop them by Gwynn Guilford for Quartz.com. Hat tip to Barry Ritholtz’s The Big Picture.
Korea’s plan to shred a jellyfish plague with robots could spawn a million more by Christopher Mims for Quartz.com.
They’re Taking Over! by Tim Flannery for the New York Review of Books
Jellyfish surge in the Mediterranean threatens environment — and tourists by Giles Tremlett for The Guardian.
Deadly jellyfish to bloom in north Australian waters by Carolyn Herbert for the Australian Broadcasting Corporation
Jellyfish clog pipes of Swedish nuclear reactor forcing shutdown by the Associated Press.