Edward Marcoux

Wildlife photographer Steve Winter and cameraman Bertie Gregory capture the lives of jaguars in the Pantanal of Brazil; a mother jaguar teaches her cub how to survive, while a male jaguar dives headfirst into a river to tackle a six-foot-long caiman.

Scientists dive deep on the mysterious and unusual predatory behavior of orcas attacking great white sharks, and the disappearance of the other sharks after these attacks.