We booked this one through Holland America, www.hollandamerica.com/en/us/cruise-destinations/caribbean-cruises/caribbean-ports/gdt/55680 They book through Chukka Tours at Grand Turk, so you could also search through them or other booking sites that mention the Snorkel/Stingray excursion through Chukka
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We booked this one through Holland America,
www.hollandamerica.com/en/us/cruise-destinations/caribbean-cruises/caribbean-ports/gdt/55680
They book through Chukka Tours at Grand Turk, so you could also search through them or other booking sites that mention the Snorkel/Stingray excursion through Chukka