The only country on earth issuing permits to swim with sperm whales. Resident matrilineal families, the same named individuals…The only country on earth issuing permits to swim with sperm whales. Resident matrilineal families, the same named individuals across decades, logging at the surface, calves nuzzling, and codas (their click-language) loud enough to vibrate your chest. Deep water lies within a mile of shore. Studied continuously since 2005 by the Dominica Sperm Whale Project, which built individual life histories for the resident clans. In 2023 Dominica announced the world's first sperm whale marine protected area, roughly 800 km² of its western waters. Anchorage: Portsmouth (Prince Rupert Bay) and Roseau moorings, a favourite Windward Islands stop. Hazards: No site-specific hazards noted, brief normally. More