Scientists say jellyfish are proliferating faster than ever before . Changing water temperatures and overfishing are behind the surge in population . Irukandji , box jellyfish among the world 's most deadly varieties . By fishing out jellyfish predators and competitors , humans are creating perfect conditions for jellyfish to multiply . ` Comment:
Scientists say jellyfish are proliferating faster than ever before . Changing water temperatures and overfishing are behind the surge in population . Irukandji , box jellyfish among the world 's most deadly varieties . Comment: