The Institute of Research for Development has conducted a study that documents the impact of overfishing in the growth of jellyfish swarms. As predator fish that typically keep the number of jellyfish in check have been stripped out of the oceans by humans hungry for sushi, the world’s jelly populations have been free to reproduce in ever larger numbers.
It’s easy for irukandji to get through the nets that keep sharks and larger stinging jellyfish away from people at beaches. The irukandji just swim right through, free to zap.
The wealthy may not be quite as wealthy any more, but they can still buy an electronic hypnotic jellyfish aquarium from Hammacher Schlemmer.