Pictured: The bow of the National Geographic Quest in Tracy Arm, North Sawyer Glacier, Alaska Lindblad Expeditions will resume operations in June with sailings in Alaska and Galapagos. The small-ship expedition cruises will require proof of Covid-19 vaccination for all guests aged 16 and above, plus two negative Covid tests before boarding. There will also be daily guest temperature checks and thorough sanitation protocols. Sven Lindblad, chief executive of the cruise and adventure travel company, said: “Our internal team has spent the last year examining every single aspect of our operation to be prepared to operate in the ‘new normal.’ “Led by our resident medical expert, Dr David Lorber, we have enlisted the assistance of many health and safety experts and met with authorities in the regions we intend to explore to ensure we are welcome and meet or exceed their expectations.”