A look at the Caribbean - a tropical paradise rich in surprising wildlife stories. In the open seas, sailfish use incredible speed and coordination to hunt sardines - a dynamic chase rarely seen in such detail. Off the coast of Dominica, a family of sperm whales dive deep to hunt squid. It is a world-first look at their communal dives and unique hunting behaviour. On Cuba's Zapata Peninsula, millions of red land crabs undertake a massive migration to lay their eggs in the sea. The programme reveals the full scale of this spectacle for the very first time. In Dominica, purple-throated Carib hummingbirds defend their nectar-rich flowers in the aftermath of Hurricane Maria to help them find love in a recovering ecosystem. On Panama's remote Isla Jicaron, capuchin monkeys cleverly use stone tools to crack nuts, providing a rare glimpse into their adaptability and intelligence in an unforgiving environment.