The third of a six-part series of zoological exploration.
Introduced by Jeffery Boswall
Pi Pi Le is one of many dramatic limestone islands off the Thai coast in the Indian Ocean. The expedition camps here for three weeks to discover monkeys, owls and land crabs that live in the forest, reef herons that forage along the shore and a colourful kaleidoscope of fish that live in the coral reefs.
Butterflies, puffers and parrots are all fish, each species with its particular niche in the economy of the reef. But why do these fish display such a variety of colour, pattern and shape?
BBC Bristol