Neil combines his veterinary knowledge and dive skills to assist the Bermuda department of fisheries on a exciting and dangerous mission to protect the breeding grounds of the Bermuda black grouper. Watch Neil anaesthetise these fish and surgically implant acoustic tags before trialling a dangerous but less invasive grouper tagging system and deploying a uniquely designed grouper trap. Follow Neil and the team as they explore the deep alien world of the grouper breeding grounds and come face to face with one of the biggest threats to the atlantic ecosystem, the invasive lion fish! Narrated by Michael Douglas