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
Hardwicke Island Hardwicke Island Hardwicke Island is an island in British Columbia, Canada, measuring approximately 35 square kilometres. It is part of the Discovery Islands, an archipelago between Vancouver Island and the mainland, whose waters connect the Strait of Georgia with Johnstone Strait and Queen Charlotte Strait. Hardwicke Island lies directly off the coast of the village of Sayward and to the east of its neighbour West Thurlow Island. Hardwicke Island is located within Electoral Area C of the Strathcona Regional District. Hardwicke Island is closely connected to the Bendickson, a Norwegian family who began logging operations on the island beginning in