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
San Andrés (island) the sea route to visit the island is by cruise ships only (3–4 days journey). There are no passenger services to the island, though some cargo ships do carry a few passengers. The island also has a good network of paved lateral roads connecting the main circular road, which is of length. A tourist train (improvised tractor with coaches) also operates within the island. Boat services are also available within the island to visit various small towns and other locations of tourist interest along the coast line. San Andrés (island) Saint Andrew is a Colombian coral island in the Caribbean