資料來源：SCUBADIVING.com
Best Ice Diving Destinations In The World
Tobermory, Canada
Get past freeze-proof gear and under-ice protocol, and winter diving packs a trippy reality found nowhere else.
This past winter, Lake Huron, home to Fathom Five National Marine Park, never froze solid. Most polar-plunge seekers passed, unable to tote gear by sled or car across the lake.
