A denuded crab turned highway-man; an octopus coaxed into playing touch; jawfish which try to swallow each other whole; green turtles fighting a losing battle against the gourmet's love for turtle soup.

These are some of the sea citizens of the Bahaman reefs that a portrait photographer Harry Pederson films every holiday. For the last 20 years between water-skiing, swimming, sailing and enjoying the colourful day- and nightlife of these tropical islands Harry and his family have been exploring the underwater world of the coral reefs.

Chimpanzees can appear quite human through their actions and expressions, which are often similar to ours. Why, then, have they not become even more human than they are?
In this fascinating film a team of scientists from the University of Amsterdam study the social structure of wild chimpanzees in Guinea and conduct some experiments with them. What, for example, will be the chimps' reaction to a stuffed leopard? The answer is provided in one of the most remarkable sequences ever shown in this series.