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
Calala Island Calala Island is located in the Caribbean Sea and is part of the Pearl Cays archipelago, off the coast of Nicaragua. The island is under the administration of the South Caribbean Coast Autonomous Region. At some point in its history, the name of the island changed from Lime Cay to Calala Island. The likelihood is due to a name clash with a Jamaican cay. The island is located around 4 km off the Nicaraguan coast, lying 27 km from Pearl Lagoon. Following a prolonged period of neglect, Calala Island was purchased by Tim Wickham and became an inhabited island again