Chris reveals some of the cleverest animal communicators on the planet. For decades, people have longed to emulate Dr Doolittle and be able to understand what animals are communicating to one another. But their methods often go far beyond the capabilities of our human senses. Now, thanks to dedicated researchers, new science and cutting-edge technology, we're being given a glimpse into the ingenious ways that animals get their message across - that dolphins have individual names for each other, that cuttlefish use covert signals, and that humans can understand apes without even realising it.
This episode details the relationship between flowers and insects. There are some one million classified species of insect, and two or three times as many that are yet to be labelled. Around 300 million years ago, plants began to enlist insects to help with their reproduction, and they did so with flowers. Although the magnolia, for instance, contains male and female cells, pollination from another plant is preferable as it ensures greater variation and thus evolution. Flowers advertise themselves by either scent or display. Some evolved to produce sweet-smelling nectar and in turn, several insects developed their mouth parts into feeding tubes in order to reach it.
Explore the wild blue Caribbean waters of Cozumel, a lush paradise packed with marine surprises. From the spectacular Paso Del Cedral coral reef to the world's longest subterranean underwater cave system, go where only the bravest divers dare venture.
Learn how rain transforms the area into a lush grazing pasture, creating an abundance of food. Moderate weather makes it harder for predators, as prey can migrate further. With plenty of food available, mating and birthing seasons have arrived.