2008 Jellyfish bottle - Jellyfish populations are exploding worldwide. There are several theories:
1) They are actually responding favorably to rising ocean temperatures
2) As we remove their primary predators (turtles, fish) through overfishing or fishery by-catch, they are free to grow unhindered
3) Jellyfish eat fish larvae, so fish that are already in trouble have a harder time building back their populations. Scary, huh?