🌊An unusual swarm of jellyfish has overrun the coasts of Venezuela this year and is affecting local fishing industries. The invasive cannonball jellyfish is filling fishermen's nets, in a surge the environment ministry attributes to warming waters from climate change and a decline in predators such as sharks and sea turtles. Globally, jellyfish populations have soared. Researchers have warned of a tipping point in which the oceans could go from being dominated by fish populations, to jellyfish