Wild Caribbean reef fish anywhere in the Caribbean. The final island to be featured is Trinidad, cut off from South America by rising sea levels 2,000 years ago. Its island fauna include many mainland species such as red howler monkeys, capuchins and scarlet ibis. Coral reefs, which thrive in the warm, shallow waters around Caribbean Islands, are the subject of the second programme. Hard corals are the reef-builders, and grow their tough external skeletons by extracting nutrients from algae growing within them. Time-lapse footage shows coral polyps emerging at night to trap drifting plankton. Marine life featured includes Caribbean reef squid, octopus
Fundo Island east. Fundo Island Fundo Island is located off the northwest coast of Pemba Island, one of the two main islands of Tanzania's Zanzibar Archipelago. It is one of the larger minor islands in the archipelago, and the largest of those surrounding Pemba. Fundo Island is nine kilometres in length, though barely a kilometre in width, and is surrounded by a reef. Together with the smaller Njao Island, which lies immediately to the north, and several smaller islands to the south, Fundo forms a natural barrier and breakwater for the harbour of the town of Wete, which lies six kilometres to