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2 Episodes 2012 - 2012
Episode 1
52 mins
Chris Packham elaborates on a few strange phenomena in the animal world. When females of butterfly species happen to lay their eggs close near each-other, the result can be an overpopulation of caterpillars, who all make cocoons, which can thus assemble to what appears a huge cloak over trees and anything nearby. Sometimes fishmongers and their clients are revolted by the sight of a large parasite in the mouth of fishes, which locks into their tongues or even appears to replace it.
Episode 2
59 mins
Chris Packham elaborates on more strange phenomena in the animal world. In California, a marina is flooded with dead sardines. There are several theories about what happened to them, but dissection showed a chemical produced by blooming algae which caused a fatal lack of oxygen.