00:00A wave over 100 feet tall could follow a major slide in Alaska's disenchantment bay.
00:05Up to five cruise ships visit that bay on some days, with no visitation limits.
00:10About 1.7 million people travel to Alaska on cruise ships each year.
00:15Landslide tsunamis may have increased roughly tenfold.
00:18These waves are now estimated to occur about once a year.
00:21Thawing permafrost and retreating glaciers are weakening slopes above the water.
00:26About 4,000 people are exposed to the hazard daily.
00:29Predicting when a slope will fail is beyond current science.
00:32The U.S. Coast Guard has no plan for an event like the Tracy Arms tsunami.
00:37Cruise lines say safety is their highest priority, and itineraries can change.
00:42There needs to be a plan.
00:44Alaska's busiest cruise fjords still have no landslide tsunami plan.
00:48Disclosure.
00:48This video contains stock footage and content created or enhanced using AI-assisted tools.
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