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
Banggi Island Banggi Island Banggi Island () is located within the Kudat Division of Sabah in Malaysia. With an area of 440.7 square kilometres, it is the largest island in Malaysia followed by Bruit Island, Langkawi Island and Penang Island. It is located off the northern coast of Sabah near Marudu Bay. The highest elevation on the island is a hill 529 metres high. As of 2016, it has an estimated population of 30,000. Banggi's largest settlement is Limbuak. In 2014, a new township was proposed to be built in the island. The island is also part of the gazetted area of